160415-D-DT527-371 PALAWAN, Philippines (April 15, 2016) Secretary of Defense Ash Carter listens to radio traffic on a Marine Corps V-22 Osprey as he departs the Puerto Princess Airport in Palawan, Philippines with Philippine Secretary of National Defense Voltaire Gazmin in route to visit the USS Stennis that was in the South China Sea April 15, 2016. Carter is visiting the Philippines to solidify the rebalance to the Asia-Pacific region. (U.S. Air Force photo by Senior Master Sgt. Adrian Cadiz/Released)