Group portrait of attendees at a screening of the documentary 'The Vietnam War' at the Kennedy Center, Washington DC, September 12, 2017. The...
Defense Secretary Chuck Hagel, background left, arrives for a meeting of NATO defense ministers in the format of the North Atlantic Council with...
Defense Secretary Chuck Hagel, left, kneels down to hand out a coin from the office of the Secretary of Defense to retired Sgt. Brendan Marrocco,...