This image from video provided by the FBI, shows Aaron Alexis moves through the hallways of Building #197 at the Washington Navy Yard on Monday, Sept. 16, 2013, in Washington, carrying a Remington 870... more 
This image from video provided by the FBI, shows Aaron Alexis moves through the hallways of Building #197 at the Washington Navy Yard on Monday, Sept. 16, 2013, in Washington, carrying a Remington 870 shotgun. Alexis, a 34-year-old former Navy reservist and IT contractor, shot and killed 12 people inside a Navy Yard building last week before being killed in a shootout with police. (AP Photo/FBI) less 
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Associated Press | Photo By FBI
Wed, Sep 25, 2013 7:44 PM EDT