Exercise directors from the U.S. Air Force, Thai Air Force and Singapore Air Force pose for a group photo during Cope Tiger 2013 at Korat Royal Thai Air Force Base, Thailand, March 10, 2013. Cope Tiger is an annual, multilateral aerial exercise that divides Thai, Singaporean and U.S. Air Force, Navy and Marine Corps aircraft into two mixed groups, pitting them against each other in a mock battle. The exercise also includes humanitarian and civic assistance programs. (U.S. Air Force photo by 2nd Lt. Jake Bailey/Released)