A police band stops pedestrians next to

A police band stops pedestrians next to a downed tree from Hurricane Irene tree on a street in the Northwest neighborhood of Washington, DC, August 28, 2011. AFP PHOTO / Mladen ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

A fallen lamp post and uprooted tree are

A fallen lamp post and uprooted tree are seen on Yuma Street August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

A fallen tree which also knocked over a

A fallen tree which also knocked over a power line is seen on Loughboro Road after Hurricane Irene swept through the area, August 28, 2011 in Washington, DC. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

An uprooted tree resting precariously on

An uprooted tree resting precariously on powerlines is seen at the intersection of Reno Rd and Warren St. August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

An uprooted tree resting precariously on

An uprooted tree resting precariously on powerlines is seen at the intersection of Reno Rd and Warren St. August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

An uprooted tree and hanging powerlines

An uprooted tree and hanging powerlines block Reno Road in the northwest of Washington, DC August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

A tattered US flag flutters in the wind

A tattered US flag flutters in the wind in downtown Washington, DC after Hurricane Irene passed over the US capital, August 28, 2011. AFP PHOTO / Mladen ANTONOV AFP PHOTO / Mladen ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

A tattered US flag flutters in the wind

A tattered US flag flutters in the wind in downtown Washington, DC after Hurricane Irene passed over the US capital, August 28, 2011. AFP PHOTO / Mladen ANTONOV AFP PHOTO / Mladen ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

A stop sign is covered by a fallen branc

A stop sign is covered by a fallen branch in the northwest of Washington, DC August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

A fallen lamp post and uprooted tree are

A fallen lamp post and uprooted tree are seen on Yuma Street August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

A car is seen under an uprooted tree on

A car is seen under an uprooted tree on Upton Street August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

An uprooted tree resting precariously on

An uprooted tree resting precariously on powerlines is seen at the intersection of Reno Rd and Warren St. August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

A car is seen under an uprooted tree on

A car is seen under an uprooted tree on Upton Street August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

A resident passes next to a downed tree

A resident passes next to a downed tree that lies over a car on a street in the Northwest neighborhood of Washington, DC, August 28, 2011. AFP PHOTO / Mladen ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

A resident take photos with his mobile p

A resident take photos with his mobile phone of a downed tree that lies over a car on a street in the Northwest neighborhood of Washington, DC, August 28, 2011. AFP PHOTO / Mladen ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

A Pepco utility worker cordons off an up

A Pepco utility worker cordons off an uprooted treet on Upton Street August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

An uprooted tree resting precariously on

An uprooted tree resting precariously on powerlines is seen at the intersection of Reno Rd and Warren St. August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

A fallen lamp post and uprooted tree are

A fallen lamp post and uprooted tree are seen on Yuma Street August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

Damage is seen trough the foliage of a d

Damage is seen trough the foliage of a downed tree that lies over a house on a street in the Northwest neighborhood of Washington, DC, August 28, 2011. AFP PHOTO / Mladen ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

Damage is seen trough the foliage of a d

Damage is seen trough the foliage of a downed tree that lies over a house on a street in the Northwest neighborhood of Washington, DC, August 28, 2011. AFP PHOTO / Mladen ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

A resident moves his car parked next to

A resident moves his car parked next to a downed tree that lies over a house on a street in the Northwest neighborhood of Washington, DC August 28, 2011. AFP PHOTO / Mladen ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

A resident looks at a fallen lamp post a

A resident looks at a fallen lamp post and uprooted tree on Yuma Street August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

Residents look at a downed tree that lie

Residents look at a downed tree that lies over a house on a street in the Northwest neighborhood of Washington, DC, August 28, 2011. AFP PHOTO / Mladen ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

Passers-by look at a fallen lamp post an

Passers-by look at a fallen lamp post and an uprooted tree on Yuma Street August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

Residents look at a downed tree that lie

Residents look at a downed tree that lies over a house on a street in the Northwest neighborhood of Washington, DC, August 28, 2011. AFP PHOTO / Mladen ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

A fallen lamp post and uproot tree are s

A fallen lamp post and uproot tree are seen on Yuma Street August 28, 2011 after Hurricane Irene swept through the area. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

Residents look at a downed tree that lie

Residents look at a downed tree that lies over a house on a street in the Northwest neighborhood of Washington, DC, August 28, 2011. AFP PHOTO / Mladen ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

Residents walk past a tree uprooted by H

Residents walk past a tree uprooted by Hurricane Irene on Yuma Street August 28, 2011 in Washington, DC. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

Trees uprooted by Hurricane Irene block

Trees uprooted by Hurricane Irene block Yuma Street August 28, 2011 in Washington, DC. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

A fallen tree which also knocked over a

A fallen tree which also knocked over a power line is seen on Loughboro Road after Hurricane Irene swept through the area, August 28, 2011 in Washington, DC. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

A fallen tree which also knocked over a

A fallen tree which also knocked over a power line is seen on Loughboro Road after Hurricane Irene swept through the area, August 28, 2011 in Washington, DC. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

A resident looks at a fallen tree which

A resident looks at a fallen tree which also knocked over a power line on Loughboro Road after Hurricane Irene swept through the area, August 28, 2011 in Washington, DC. Hundreds of thousands in the Capital region have been left without power in the wake of Hurricane Irene. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

A downed tree lies across the road in th

A downed tree lies across the road in the Georgetown neighborhood of Washington, DC, August 28, 2011, as residents assess the damage caused by Hurricane Irene. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

A downed tree lies across the road in th

A downed tree lies across the road in the Georgetown neighborhood of Washington, DC, August 28, 2011, as residents assess the damage caused by Hurricane Irene. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

A downed tree lies across the road in th

A downed tree lies across the road in the Georgetown neighborhood of Washington, DC, August 28, 2011, as residents assess the damage caused by Hurricane Irene. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

A downed tree lies across the road in th

A downed tree lies across the road in the Georgetown neighborhood of Washington, DC, August 28, 2011, as residents assess the damage caused by Hurricane Irene. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

A downed tree lies across the road in th

A downed tree lies across the road in the Georgetown neighborhood of Washington, DC, August 28, 2011, as residents assess the damage caused by Hurricane Irene. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

A downed tree lies across the road in th

A downed tree lies across the road in the Georgetown neighborhood of Washington, DC, August 28, 2011, as residents assess the damage caused by Hurricane Irene. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

A downed tree lies across the road in th

A downed tree lies across the road in the Georgetown neighborhood of Washington, DC, August 28, 2011, as residents assess the damage caused by Hurricane Irene. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

A man looks up at a downed tree lying ac

A man looks up at a downed tree lying across the road in the Georgetown neighborhood of Washington, DC, August 28, 2011, as residents assess the damage caused by Hurricane Irene. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

DC Area Deals With Aftermath Of Hurricane Irene

ARLINGTON, VA - AUGUST 28: A fallen tree blocks Vermont St. NW north of Logan Circle after Hurricane Irene moved through the nation's capital August 28, 2011 in Arlington, Virginia. While Hurricane Irene has now been downgraded to a tropical storm, it has knocked out power to more than 3 million people and is attributed to 10 deaths as it travels up the Eastern seaboard. (Photo by Win McNamee/Getty Images)

DC Area Deals With Aftermath Of Hurricane Irene

ARLINGTON, VA - AUGUST 28: A fallen tree blocks Vermont St. NW north of Logan Circle after Hurricane Irene moved through the nation's capital August 28, 2011 in Arlington, Virginia. While Hurricane Irene has now been downgraded to a tropical storm, it has knocked out power to more than 3 million people and is attributed to 10 deaths as it travels up the Eastern seaboard. (Photo by Win McNamee/Getty Images)

DC Area Deals With Aftermath Of Hurricane Irene

ARLINGTON, VA - AUGUST 28: The American flag flies in tatters above the U.S. Capitol after Hurricane Irene moved through the nation's capital August 28, 2011 in Arlington, Virginia. While Hurricane Irene has now been downgraded to a tropical storm, it has knocked out power to more than 3 million people and is attributed to 10 deaths as it travels up the Eastern seaboard. (Photo by Win McNamee/Getty Images)

DC Area Deals With Aftermath Of Hurricane Irene

ARLINGTON, VA - AUGUST 28: The American flag flies in tatters above the U.S. Capitol after Hurricane Irene moved through the nation's capital August 28, 2011 in Arlington, Virginia. Hurricane Irene has left more than 2 million people without power, and today has come ashore in New Jersey and is expected to cause major problems in New York City. (Photo by Win McNamee/Getty Images)

DC Area Deals With Aftermath Of Hurricane Irene

ARLINGTON, VA - AUGUST 28: The American flag flies in tatters above the U.S. Capitol after Hurricane Irene moved through the nation's capital August 28, 2011 in Arlington, Virginia. Hurricane Irene has left more than 2 million people without power, and today has come ashore in New Jersey and is expected to cause major problems in New York City. (Photo by Win McNamee/Getty Images)

DC Area Deals With Aftermath Of Hurricane Irene

ARLINGTON, VA - AUGUST 28: The American flag flies in tatters above the U.S. Capitol after Hurricane Irene moved through the nation's capital August 28, 2011 in Arlington, Virginia. Hurricane Irene has left more than 2 million people without power, and today has come ashore in New Jersey and is expected to cause major problems in New York City. (Photo by Win McNamee/Getty Images)

DC Area Deals With Aftermath Of Hurricane Irene

ARLINGTON, VA - AUGUST 28: The American flag flies in tatters above the U.S. Capitol after Hurricane Irene moved through the nation's capital August 28, 2011 in Arlington, Virginia. Hurricane Irene has left more than 2 million people without power, and today has come ashore in New Jersey and is expected to cause major problems in New York City. (Photo by Win McNamee/Getty Images)

DC Area Deals With Aftermath Of Hurricane Irene

ARLINGTON, VA - AUGUST 28: The American flag flies in tatters above the U.S. Capitol after Hurricane Irene moved through the nation's capital August 28, 2011 in Arlington, Virginia. Hurricane Irene has left more than 2 million people without power, and today has come ashore in New Jersey and is expected to cause major problems in New York City. (Photo by Win McNamee/Getty Images)

DC Area Deals With Aftermath Of Hurricane Irene

ARLINGTON, VA - AUGUST 28: The American flag flies in tatters above the U.S. Capitol after Hurricane Irene moved through the nation's capital August 28, 2011 in Arlington, Virginia. Hurricane Irene has left more than 2 million people without power, and today has come ashore in New Jersey and is expected to cause major problems in New York City. (Photo by Win McNamee/Getty Images)