A police officer stands guard at the front gate of the Washington Naval Yard Tuesday in Washington, D.C.
A police officer stands guard at the front gate of the Washington Naval Yard Tuesday in Washington, D.C. MCT
A police officer stands guard at the front gate of the Washington Naval Yard Tuesday in Washington, D.C. MCT

Alleged D.C. gunman reportedly heard voices, had checkered past

September 17, 2013 05:25 PM