D.C. Navy Yard

Navy to Rename DC Building Where Gunman Killed 12 Officials are renaming the Washington Navy Yard building where a gunman fatally shot 12 people in September before he was killed by police.
Chief: D.C. Cop 'Took 2 Rounds' to Chest in Navy Yard Rampage The District of Columbia's police chief says a police officer was shot in the chest but saved by his bulletproof vest while responding to the shootings at the Washington Navy Yard.
After Mass Shooting, A Look at Security Clearances Details about the clearances granted to government employees, contractors and others.
Sources: Navy Yard Shooter Was 'Hearing Voices,' Had Mental IllnessAt the time of the rampage, Aaron Alexis, 34, was an employee with a "The Experts," a Hewlett-Packard owned company that was a Defense Department subcontractor on a Navy-Marine Corps computer project, authorities said.