Secretary of Defense Ash Carter listens to a briefing

Secretary of Defense Ash Carter listens to a briefing before speaking at the Ride 2 Recovery Memorial Challenge bike ride at the vice president's residence at the U.S. Naval Observatory in Washington, D.C., May 25, 2015. Carter kicked off the annual event with Vice President Joe Biden. The riders will ride from Washington, D.C., to Virginia Beach, Va., over the course of five days. (DoD photo by Petty Officer 2nd Class Sean Hurt/ Released)