U.S., Japan airmen join forces for bilateral exercise
Tech. Sgt. Charles Roberts coordinates airspace requirements with his Japan Air Self-Defense Force counterpart, 1st Lt. Keisuke Nakajima, during Keen Edge '10 Jan. 25, 2010, at Yokota Air Base, Japan. Exercise participants practice responding to various events to increase combat readiness and interoperability of U.S. forces and Japan Self-Defense Forces. Sergeant Roberts is a Keen Edge combat airspace manager from the 374th Operations Support Squadron. (U.S. Air Force photo/Capt. Will Powell)