Space Shuttle Discovery Arrives In DC

Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, lands at Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, lands at Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, prepares to land at Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: People gather to watch the arrival of the space shuttle Discovery, teathered to the back of a modified 747 jumbo jet, at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: People gather to watch the arrival of the space shuttle Discovery, teathered to the back of a modified 747 jumbo jet, at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: People listen to air traffic controlers on a scanner while waiting for the arrival of the space shuttle Discovery, teathered to the back of a modified 747 jumbo jet, at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: The space shuttle Discovery is teathered to the back of a modified 747 jumbo jet as it passes over the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center on its final approach into Dulles International Airport April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: The space shuttle Discovery is teathered to the back of a modified 747 jumbo jet as it passes over the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center on its final approach into Dulles International Airport April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: People gather to watch the arrival of the space shuttle Discovery, teathered to the back of a modified 747 jumbo jet, at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a specially modified NASA Boeing 747, flies over the Washington, DC, April 17, 2012, as seen from Arlington, Virginia. NASA is transferring the Shuttle, which completed 39 missions and spent 365 days in space, to the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center at Dulles Airport in Virginia. AFP PHOTO / Karen BLEIER (Photo credit should read KAREN BLEIER/AFP/Getty Images)
A photographer gets down low for a shot
A photographer gets down low for a shot
A photographer gets down low for a shot of the Space Shuttle Discovery after it's final landing on the back of a NASA's Boeing 747 Shuttle Carrier Aircraft(SCA), at Washington, Dulles (IAD) International airport April 17, 2012. The shuttle is on it's way to it's new permanent display at the Smithsonian National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Virginia. AFP Photo/Paul J. Richards (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies by the Old Post Office building in Washington on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/MLADEN ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Space shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, stops at the tarmac after it landed at Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC, area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Space shuttle Discovery, mounted atop a 747 shuttle carrier aircraft lands at Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC, area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
(Credit: Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, flies by one of the control towers of Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC, area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
(Credit: Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, sits on the tarmac after it landed at Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC, area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, sits on the tarmac after it landed at Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC, area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, sits on the tarmac after it landed at Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC, area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, sits on the tarmac after it landed at Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC, area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
The Space Shuttle Discovery takes it las
The Space Shuttle Discovery takes it las
The Space Shuttle Discovery takes it last ride on the back of a NASA's Boeing 747 Shuttle Carrier Aircraft(SCA), seen here landing at Washington, Dulles International Airport, April 17, 2012. The shuttle is on it's way to it's new permanent display at the Smithsonian National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Virginia. AFP Photo/Paul J. Richards (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Members of the press photograph the Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, after it landed at Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC, area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: People watch a fly-over of Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, at Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC, area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: U.S. Secretary of Transportation Ray LaHood (3rd L)speaks as the flight crew of the 747 shuttle carrier aircraft that carried Space Shuttle Discovery to Washington Dulles International Airport for the final trip to its retirement place looks on after it landed April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC, area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: People watch a fly-over of Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, at Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC, area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
The Space Shuttle Discovery sits atop NA
The Space Shuttle Discovery sits atop NA
The Space Shuttle Discovery sits atop NASA's Boeing 747 Shuttle Carrier Aircraft(SCA), seen here after landing at Washington, Dulles (IAD) airport April 17, 2012. The shuttle is on it's way to it's new permanent display at the Smithsonian National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Virginia. AFP Photo/Paul J. Richards (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
The Space Shuttle Discovery sits on the
The Space Shuttle Discovery sits on the
The Space Shuttle Discovery sits on the back of a NASA's Boeing 747 Shuttle Carrier Aircraft(SCA) as the CSA crew deboards after landing at Washington, Dulles International Airport (IAD) April 17, 2012. The shuttle is on it's way to it's new permanent display at the Smithsonian National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Virginia. AFP Photo/Paul J. Richards (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, flies by Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Four-year-old Alex Mendez of Sterling, VA, wears a space shuttle costume while he waits with thousands of others for the arrival of the space shuttle Discovery at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: The space shuttle Discovery, teathered to the back of a modified 747 jumbo jet, passes over the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: The space shuttle Discovery, teathered to the back of a modified 747 jumbo jet, passes over the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
ARLINGTON, VA - APRIL 17: People on a roof top watch as the space shuttle Discovery rides atop a Boeing 747 as it flies past Washington, on April 17, 2012 in Arlington, Virginia. The retired shuttle was traveling to the Smithsonian's Air and Space Museum's Udvar-Hazy Center in Chantilly, Virginia, where is will go on display. This photograph was taken at the Top of the Town in Arlington, Virginia. (Photo by Mark Wilson/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
WASHINGTON, DC - APRIL 17: Space shuttle Discovery mounted atop a 747 shuttle carrier aircraft, flies by the Washington Monument during a flyover of the nation's capital on its final trip to its retirement place April 17, 2012 in Washington, DC. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Win McNamee/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
WASHINGTON, DC - APRIL 17: School children on a tour watch as Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, flies over the U.S. Capitol during a flyover of the nation's capital on its final trip to its retirement place April 17, 2012 in Washington, DC. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Win McNamee/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
WASHINGTON, DC - APRIL 17: Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, flies over the U.S. Capitol during a flyover of the nation's capital on its final trip to its retirement place April 17, 2012 in Washington, DC. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Win McNamee/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
ARLINGTON, VA - APRIL 17: A man on a a roof top watches as the space shuttle Discovery rides atop a Boeing 747 as it flies past Washington, on April 17, 2012 in Arlington, Virginia. The retired shuttle was traveling to the Smithsonian's Air and Space Museum's Udvar-Hazy Center in Chantilly, Virginia, where is will go on display. This photograph was taken at the Top of the Town in Arlington, Virginia. (Photo by Mark Wilson/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
ARLINGTON, VA - APRIL 17: The space shuttle Discovery rides atop a Boeing 747 as it flies past Washington, on April 17, 2012 in Arlington, Virginia. The retired shuttle was traveling to the Smithsonian's Air and Space Museum's Udvar-Hazy Center in Chantilly, Virginia, where is will go on display. This photograph was taken at the Top of the Town in Arlington, Virginia. (Photo by Mark Wilson/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
WASHINGTON, DC - APRIL 17: Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, flies over the U.S. Capitol during a flyover of the nation's capital on its final trip to its retirement place April 17, 2012 in Washington, DC. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Win McNamee/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
ARLINGTON, VA - APRIL 17: The space shuttle Discovery rides atop a Boeing 747 as it flies past Washington, on April 17, 2012 in Arlington, Virginia. The retired shuttle was traveling to the Smithsonian's Air and Space Museum's Udvar-Hazy Center in Chantilly, Virginia, where is will go on display. This photograph was taken at the Top of the Town in Arlington, Virginia. (Photo by Mark Wilson/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: The space shuttle Discovery is teathered to the back of a modified 747 jumbo jet as it passes over the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Four-year-old Alex Mendez of Sterling, VA, wears a space shuttle costume while he waits with thousands of others for the arrival of the space shuttle Discovery at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: The space shuttle Discovery is teathered to the back of a modified 747 jumbo jet as it passes over the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Special guests watch the arrival of the space shuttle Discovery from the observation deck of the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Four-year-old Alex Mendez of Sterling, VA, wears a space shuttle costume while he waits with thousands of others for the arrival of the space shuttle Discovery at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: The space shuttle Discovery is teathered to the back of a modified 747 jumbo jet as it passes over the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: People find open space for a good view of the space shuttle Discovery before it arrives at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people arrived early in the morning to watch the arrival of the shuttle from the parking lot of the center. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)
The Space Shuttle Discovery makes it's f
The Space Shuttle Discovery makes it's f
The Space Shuttle Discovery makes it's final landing on the back of a NASA's Boeing 747 Shuttle Carrier Aircraft(SCA), at Washington, Dulles International airport April 17, 2012. The shuttle is on it's way to it's new permanent display at the Smithsonian National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Virginia. AFP Photo/Paul J. Richards (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a specially modified NASA Boeing 747, flies over the Washington, DC, April 17, 2012, as seen from Arlington, Virginia. NASA is transferring the Shuttle, which completed 39 missions and spent 365 days in space, to the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center at Dulles Airport. AFP PHOTO / Karen BLEIER (Photo credit should read KAREN BLEIER/AFP/Getty Images)
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a specially modified NASA Boeing 747, flies over the Washington, DC, April 17, 2012, as seen from Arlington, Virginia. NASA is transferring the Shuttle, which completed 39 missions and spent 365 days in space, to the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center at Dulles Airport. AFP PHOTO / Karen BLEIER (Photo credit should read KAREN BLEIER/AFP/Getty Images)
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a specially modified NASA Boeing 747, flies over the Washington, DC, April 17, 2012, as seen from Arlington, Virginia. NASA is transferring the Shuttle, which completed 39 missions and spent 365 days in space, to the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center at Dulles Airport in Virginia. AFP PHOTO / Karen BLEIER (Photo credit should read KAREN BLEIER/AFP/Getty Images)
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a specially modified NASA Boeing 747, flies past the Washington Monument in Washington, DC, April 17, 2012, as seen from Arlington, Virginia. NASA is transferring the Shuttle, which completed 39 missions and spent 365 days in space, to the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center at Dulles Airport. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a specially modified NASA Boeing 747, flies over the Washington, DC, April 17, 2012, as seen from Arlington, Virginia. NASA is transferring the Shuttle, which completed 39 missions and spent 365 days in space, to the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center at Dulles Airport in Virginia. AFP PHOTO / Karen BLEIER (Photo credit should read KAREN BLEIER/AFP/Getty Images)
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a specially modified NASA Boeing 747, flies over the Washington, DC, April 17, 2012, as seen from Arlington, Virginia. NASA is transferring the Shuttle, which completed 39 missions and spent 365 days in space, to the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center at Dulles Airport in Virginia. AFP PHOTO / Karen BLEIER (Photo credit should read KAREN BLEIER/AFP/Getty Images)
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a specially modified NASA Boeing 747, flies over the Washington, DC, April 17, 2012, as seen from Arlington, Virginia. NASA is transferring the Shuttle, which completed 39 missions and spent 365 days in space, to the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center at Dulles Airport in Virginia. AFP PHOTO / Karen BLEIER (Photo credit should read KAREN BLEIER/AFP/Getty Images)
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a specially modified NASA Boeing 747, flies over the Washington, DC, April 17, 2012, as seen from Arlington, Virginia. NASA is transferring the Shuttle, which completed 39 missions and spent 365 days in space, to the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center at Dulles Airport in Virginia. AFP PHOTO / Karen BLEIER (Photo credit should read KAREN BLEIER/AFP/Getty Images)
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies past the Washington Monument in Washington,DC on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/Nicholas KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies past the US Capitol in Washington,DC on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/Nicholas KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
NASA Prepares Shuttle Discovery For Flight To Washington, DC
NASA Prepares Shuttle Discovery For Flight To Washington, DC
CAPE CANAVERAL, FL - APRIL 16: Space shuttle Discovery sits atop NASA's 747 Shuttle Carrier Aircraft (SCA) ready to transport it from Kennedy Space Center to the Washington D.C., on April 16, 2012 in Cape Canaveral, Florida. Following the retirement of the shuttle fleet, Discovery will fly on Tuesday, April 17th to Washington for display at the Smithsonian's National Air and Space Museum. (Photo by Roberto Gonzalez/Getty Images)
NASA Prepares Shuttle Discovery For Flight To Washington, DC
NASA Prepares Shuttle Discovery For Flight To Washington, DC
CAPE CANAVERAL, FL - APRIL 16: Space shuttle Discovery sits atop NASA's 747 Shuttle Carrier Aircraft (SCA) ready to transport it from Kennedy Space Center to the Washington D.C., on April 16, 2012 in Cape Canaveral, Florida. Following the retirement of the shuttle fleet, Discovery will fly on Tuesday, April 17th to Washington for display at the Smithsonian's National Air and Space Museum. (Photo by Roberto Gonzalez/Getty Images)
NASA Prepares Shuttle Discovery For Flight To Washington, DC
NASA Prepares Shuttle Discovery For Flight To Washington, DC
CAPE CANAVERAL, FL - APRIL 16: Media watch as the space shuttle Discovery sits atop NASA's 747 Shuttle Carrier Aircraft (SCA) ready to transport it from Kennedy Space Center to the Washington D.C., on April 16, 2012 in Cape Canaveral, Florida. Following the retirement of the shuttle fleet, Discovery will fly on Tuesday, April 17th to Washington for display at the Smithsonian's National Air and Space Museum. (Photo by Roberto Gonzalez/Getty Images)
NASA Prepares Shuttle Discovery For Flight To Washington, DC
NASA Prepares Shuttle Discovery For Flight To Washington, DC
CAPE CANAVERAL, FL - APRIL 16: Space shuttle Discovery sits atop NASA's 747 Shuttle Carrier Aircraft (SCA) ready to transport it from Kennedy Space Center to the Washington D.C., on April 16, 2012 in Cape Canaveral, Florida. Following the retirement of the shuttle fleet, Discovery will fly on Tuesday, April 17th to Washington for display at the Smithsonian's National Air and Space Museum. (Photo by Roberto Gonzalez/Getty Images)
NASA Prepares Shuttle Discovery For Flight To Washington, DC
NASA Prepares Shuttle Discovery For Flight To Washington, DC
CAPE CANAVERAL, FL - APRIL 16: Space shuttle Discovery sits atop NASA's 747 Shuttle Carrier Aircraft (SCA) ready to transport it from Kennedy Space Center to the Washington D.C., on April 16, 2012 in Cape Canaveral, Florida. Following the retirement of the shuttle fleet, Discovery will fly on Tuesday, April 17th to Washington for display at the Smithsonian's National Air and Space Museum. (Photo by Roberto Gonzalez/Getty Images)
NASA Prepares Shuttle Discovery For Flight To Washington, DC
NASA Prepares Shuttle Discovery For Flight To Washington, DC
CAPE CANAVERAL, FL - APRIL 16 : Alvin Drew (from left), Nicole Stott, Mike Barratt, Steve Bowen, Eric Boe, and Steve Lindsey, the last crew, STS-133, of space shuttle Discovery which sits atop NASA's Shuttle Carrier Aircraft (SCA) ready to transport from Kennedy Space Center to the Washington D.C., on April 16, 2012 in Cape Canaveral, Florida. Following the retirement of the shuttle fleet, Discovery will fly on Tuesday, April 17th to Washington for display at the Smithsonian's National Air and Space Museum. (Photo by Roberto Gonzalez/Getty Images)
NASA Prepares Shuttle Discovery For Flight To Washington, DC
NASA Prepares Shuttle Discovery For Flight To Washington, DC
CAPE CANAVERAL, FL - APRIL 16: Media watch as the space shuttle Discovery sits atop NASA's 747 Shuttle Carrier Aircraft (SCA) ready to transport it from Kennedy Space Center to the Washington D.C., on April 16, 2012 in Cape Canaveral, Florida. Following the retirement of the shuttle fleet, Discovery will fly on Tuesday, April 17th to Washington for display at the Smithsonian's National Air and Space Museum. (Photo by Roberto Gonzalez/Getty Images)
NASA Prepares Shuttle Discovery For Flight To Washington, DC
NASA Prepares Shuttle Discovery For Flight To Washington, DC
CAPE CANAVERAL, FL - APRIL 16 : The astronauts of STS-133 walk toward the tarmac for media interviews, the space shuttle Discovery which sits atop NASA's Shuttle Carrier Aircraft (SCA) waits ready to transport from Kennedy Space Center to the Washington D.C., on April 16, 2012 in Cape Canaveral, Florida. Following the retirement of the shuttle fleet, Discovery will fly on Tuesday, April 17th to Washington for display at the Smithsonian's National Air and Space Museum. (Photo by Roberto Gonzalez/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: Space Shuttle Discovery, mounted atop a 747 shuttle carrier aircraft, flies by Washington Dulles International Airport during the final trip to its retirement place April 17, 2012 in Chantilly, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. (Photo by Alex Wong/Getty Images)
The NASA space shuttle Discovery is seen
The NASA space shuttle Discovery is seen
The NASA space shuttle Discovery is seen from the White House's North Lawn as it is flown over Washington, DC April 17, 2012. The space shuttle was carried by a modified 747 aircraft from Kennedy Space Center to Smithsonian National Air and Space Museum's Steven F. Udvar-Hazy Center in Virginia where it will spend its retirement after 39 missions. AFP PHOTO/BRENDAN SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies past the US Capitol in Washington,DC on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/Nicholas KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies over the National Mall in Washington,DC on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/ MLADEN ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a specially modified NASA Boeing 747, flies over the US Capitol, Washington Monument and Lincoln Memorial, on the National Mall in Washington, DC, April 17, 2012, as seen from Arlington, Virginia. NASA is transferring the Shuttle, which completed 39 missions and spent 365 days in space, to the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center at Dulles Airport. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies over the National Mall in Washington,DC on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/ MLADEN ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies past the US Capitol in Washington,DC on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/Nicholas KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies over the US Congress building in Washington,DC on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/ MLADEN ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a specially modified NASA Boeing 747, flies over the Washington, DC, April 17, 2012, as seen from Arlington, Virginia. NASA is transferring the Shuttle, which completed 39 missions and spent 365 days in space, to the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center at Dulles Airport. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a sp
The Space Shuttle Discovery, aboard a specially modified NASA Boeing 747, flies over the Washington, DC, April 17, 2012, as seen from Arlington, Virginia. NASA is transferring the Shuttle, which completed 39 missions and spent 365 days in space, to the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center at Dulles Airport. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies over Washington,DC on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/ MLADEN ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies over Washington monument in Washington,DC on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/ MLADEN ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies over Washington monument in Washington,DC on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/ MLADEN ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies over Washington,DC on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/ MLADEN ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
IN FLIGHT, FL - APRIL 17: In this handout provided by NASA, the space shuttle Discovery is teathered to the back of NASA 905 Shuttle Carrier Aircraft (SCA), a modified Boeing 747 jumbo jet, just after leaving NASA's Kennedy Space Center April 17, 2012 over Florida. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center. (Photo by Glenn Benson/NASA via Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
IN FLIGHT, FL - APRIL 17: In this handout provided by NASA, the space shuttle Discovery is teathered to the back of NASA 905 Shuttle Carrier Aircraft (SCA), a modified Boeing 747 jumbo jet, just after leaving NASA's Kennedy Space Center April 17, 2012 over Florida. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center. (Photo by Glenn Benson/NASA via Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
ARLINGTON, VA - APRIL 17: In this handout from NASA, Space shuttle Discovery, mounted atop a NASA 747 Shuttle Carrier Aircraft, flies past the Ronald Reagan Washington National Airport April 17, 2012, in Arlington, Virginia. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. Photo by Bill Ingalls/NASA via Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
STERLING, VA - APRIL 17: In this handout provided by NASA, space shuttle Discovery is tethered to the back of NASA 905 Shuttle Carrier Aircraft (SCA), a modified Boeing 747 jumbo jet, as it approaches the runway at Washington Dulles International Airport April 17, 2012 in Sterling, Virginia. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center. (Photo by Paul E. Alers/NASA via Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: In this handout provided by NASA, space shuttle Discovery is tethered to the back of NASA 905 Shuttle Carrier Aircraft (SCA), a modified Boeing 747 jumbo jet, as it makes it's approach to the runway at Washington Dulles International Airport April 17, 2012 in Chantilly, Virginia. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center. (Photo by Eric Long/NASA/Smithsonian Institution via Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
CHANTILLY, VA - APRIL 17: In this handout provided by NASA, space shuttle Discovery is tethered to the back of NASA 905 Shuttle Carrier Aircraft (SCA), a modified Boeing 747 jumbo jet, flies over the Steven F. Udvar-Hazy Center on its approach to Washington Dulles International Airport April 17, 2012 in Chantilly, Virginia. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center. (Photo by Eric Long/NASA/Smithsonian Institution via Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
WASHINGTON, DC - APRIL 17: In this handout provided by NASA, space shuttle Discovery is tethered to the back of NASA 905 Shuttle Carrier Aircraft (SCA), a modified Boeing 747 jumbo jet, as it as it does a fly over of the U.S. Capitol April 17, 2012 in Washington, DC. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center. (Photo by Harold Dorwin/NASA via Getty Images)
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian
WASHINGTON, DC - APRIL 17: In this handout provided by NASA, space shuttle Discovery is tethered to the back of NASA 905 Shuttle Carrier Aircraft (SCA), a modified Boeing 747 jumbo jet, as it as it does a fly over of the U.S. Capitol April 17, 2012 in Washington, DC. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center. (Photo by Rebecca Roth/NASA via Getty Images)
The US space shuttle Discovery on April
The US space shuttle Discovery on April
The US space shuttle Discovery on April 14, 2012 is towed into the mate/demate device at Kennedy Space Center, Florida to be mounted on top of NASA's 747 shuttle carrier aircraft (backgound). The 747 with Discovery aboard will be flow to Washington DC April 17 for display at the National Air and Space museum. AFP PHOTO / Bruce Weaver (Photo credit should read BRUCE WEAVER/AFP/Getty Images)
The  US space shuttle Discovery on April
The US space shuttle Discovery on April
The US space shuttle Discovery on April 14, 2012 is partially raised in the mate/demate device at Kennedy Space Center, Florida to be mounted on top of NASA's 747 shuttle carrier aircraft (backgound). The 747 with Discovery aboard will be flow to Washington DC April 17 for display at the National Air and Space museum. AFP PHOTO / Bruce Weaver (Photo credit should read BRUCE WEAVER/AFP/Getty Images)
The  US space shuttle Discovery on April
The US space shuttle Discovery on April
The US space shuttle Discovery on April 14, 2012 is partially raised in the mate/demate device at Kennedy Space Center, Florida to be mounted on top of NASA's 747 shuttle carrier aircraft (backgound). The 747 with Discovery aboard will be flow to Washington DC April 17 for display at the National Air and Space museum. AFP PHOTO / Bruce Weaver (Photo credit should read BRUCE WEAVER/AFP/Getty Images)
The  US space shuttle Discovery on April
The US space shuttle Discovery on April
The US space shuttle Discovery on April 14, 2012 is towed into the mate/demate device at Kennedy Space Center, Florida to be mounted on top of NASA's 747 shuttle carrier aircraft (backgound). The 747 with Discovery aboard will be flow to Washington DC April 17 for display at the National Air and Space museum. AFP PHOTO / Bruce Weaver (Photo credit should read BRUCE WEAVER/AFP/Getty Images)
Members of the media watch the US space
Members of the media watch the US space
Members of the media watch the US space shuttle Discovery atop NASA's 747 shuttle carrier aircraft early April 16, 2012 as they are backed away from the mate/demate device at Kennedy Space Center, Florida. The 747 with Discovery aboard will be flown to Washington on April 17 for display at the National Air and Space museum. AFP PHOTO/Bruce Weaver (Photo credit should read BRUCE WEAVER/AFP/Getty Images)
The  US space shuttle Discovery sits ato
The US space shuttle Discovery sits ato
The US space shuttle Discovery sits atop NASA's 747 shuttle carrier aircraft early April 16, 2012 as they are parked on the apron of the Shuttle Landing Facility at Kennedy Space Center, Florida. The 747 with Discovery aboard will be flown to Washington on April 17 for display at the National Air and Space museum. AFP PHOTO/Bruce Weaver (Photo credit should read BRUCE WEAVER/AFP/Getty Images)
The US space shuttle Discovery sits atop
The US space shuttle Discovery sits atop
The US space shuttle Discovery sits atop NASA's 747 shuttle carrier aircraft early April 16, 2012 as they are parked on the apron of the Shuttle Landing Facility at Kennedy Space Center, Florida. The 747 with Discovery aboard will be flown to Washington April 17 for display at the National Air and Space museum. AFP PHOTO/Bruce Weaver (Photo credit should read BRUCE WEAVER/AFP/Getty Images)
The US space shuttle Discovery sits atop
The US space shuttle Discovery sits atop
The US space shuttle Discovery sits atop NASA's 747 shuttle carrier aircraft early April 16, 2012 as they are parked on the apron of the Shuttle Landing Facility at Kennedy Space Center, Florida. The 747 with Discovery aboard will be flown to Washington April 17 for display at the National Air and Space museum. AFP PHOTO/Bruce Weaver (Photo credit should read BRUCE WEAVER/AFP/Getty Images)
The US space shuttle Discovery sits atop
The US space shuttle Discovery sits atop
The US space shuttle Discovery sits atop NASA's 747 shuttle carrier aircraft early April 16, 2012 as they are backed away from the mate/demate device at Kennedy Space Center, Florida. The 747 with Discovery aboard will be flown to Washington April 17 for display at the National Air and Space museum. AFP PHOTO/Bruce Weaver (Photo credit should read BRUCE WEAVER/AFP/Getty Images)
The US space shuttle Discovery sits atop
The US space shuttle Discovery sits atop
The US space shuttle Discovery sits atop NASA's 747 shuttle carrier aircraft early April 16, 2012 as they are parked on the apron of the Shuttle Landing Facility at Kennedy Space Center, Florida with her last crew (STS-133), from L to R, Alan Drew, Nicole Stott, Michael Barrett, Steve Bowen, Pilot Eric Boe and Commander Steve Lindsey. The 747 with Discovery aboard will be flown to Washington April 17 for display at the National Air and Space museum. AFP PHOTO/Bruce Weaver (Photo credit should read BRUCE WEAVER/AFP/Getty Images)
The  US space shuttle Discovery early Ap
The US space shuttle Discovery early Ap
The US space shuttle Discovery early April 17, 2012 atop NASA's 747 shuttle carrier aircraft as they take off at Kennedy Space Center, Florida. The 747 with Discovery aboard is flying to Washington DC for display at the National Air and Space museum. AFP PHOTO/Bruce Weaver (Photo credit should read BRUCE WEAVER/AFP/Getty Images)
The  US space shuttle Discovery early Ap
The US space shuttle Discovery early Ap
The US space shuttle Discovery early April 17, 2012 atop NASA's 747 shuttle carrier aircraft as they take off at Kennedy Space Center, Florida. The 747 with Discovery aboard is flying to Washington DC for display at the National Air and Space museum. AFP PHOTO/Bruce Weaver (Photo credit should read BRUCE WEAVER/AFP/Getty Images)
The Space Shuttle Discovery takes it las
The Space Shuttle Discovery takes it las
The Space Shuttle Discovery takes it last ride on the back of a NASA's Boeing 747 Shuttle Carrier Aircraft(SCA), seen here on a pass over Washington, Dulles airport April 17, 2012. Shortly after the CSA flew over the Washington, DC, area, the shuttle was on it's way to it's new permanent display at the Smithsonian National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Virginia. AFP Photo/Paul J. Richards (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
The Space Shuttle Discovery takes it las
The Space Shuttle Discovery takes it las
The Space Shuttle Discovery takes it last ride on the back of a NASA's Boeing 747 Shuttle Carrier Aircraft(SCA), seen here on a pass over Washington, Dulles airport April 17, 2012. Shortly after the CSA flew over the Washington, DC, area, the shuttle was on it's way to it's new permanent display at the Smithsonian National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Virginia. AFP Photo/Paul J. Richards (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
The Space Shuttle Discovery is seen abov
The Space Shuttle Discovery is seen abov
The Space Shuttle Discovery is seen above a residential neighbourhood while being transported on a modified jumbo jet April 17, 2012 in Chevy Chase, Maryland. The longest-serving orbiter in the space shuttle fleet was flown from Kennedy Space Center in Florida to the Washington, DC area to be transferred to the Smithsonian National Air and Space Museum and will be placed on display in the museum's Steven F. Udvar-Hazy Center. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
People stand on the roof of the US Labor
People stand on the roof of the US Labor
People stand on the roof of the US Labor Department as US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies by in Washington,DC on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/Nicholas KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
The NASA space shuttle Discovery is seen
The NASA space shuttle Discovery is seen
The NASA space shuttle Discovery is seen from the White House's North Lawn as it is flown over Washington, DC April 17, 2012. The space shuttle was carried by a modified 747 aircraft from Kennedy Space Center to Smithsonian National Air and Space Museum's Steven F. Udvar-Hazy Center in Virginia where it will spend its retirement after 39 missions. AFP PHOTO/BRENDAN SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
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