U.S. Air Force Senior Airman Corey Henry, left, an F-15C Eagle aircraft armament technician assigned to the 44th Aircraft Maintenance Unit, exchanges greetings with a Singaporean airman before an F-15 aircraft maintenance exchange during Cope Tiger 13 at Korat Royal Thai Air Force Base, Thailand, March 12, 2013. Cope Tiger is an annual multilateral aerial exercise designed to improve readiness and cooperation between U.S., Thai and Singaporean forces. (U.S. Air Force photo by 2nd Lt. Jake Bailey/Released)