An U.S. Air Force A-10 Thunderbolt II aircraft assigned to the 25th Fighter Squadron prepares for a simulated airstrike during exercise Cope Tiger 13 at Royal Thai Air Base Nam Phong, Thailand, March 19, 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)