Πυροβολισμοί και νεκροί σε ναυτική βάση στην Ουάσιγκτον

Emergency vehicles and law enforcement personnel respond to a shooting at an entrance to the Washington Navy Yard, Sept. 16, 2013.

Police respond to the shooting at the Washington Navy Yard, Sept. 16, 2013.

A police helicopter is seen as police walk on the roof of a building as they respond to a shooting at the Washington Navy Yard, in Washington, Sept. 16, 2013.

A police helicopter lifts what appears to be a shooting victim up as it hovers over a rooftop on the Washington Navy Yard, Sept. 16, 2013.