Royal Thai air force pilots stand in formation during the closing ceremony for Cope Tiger 17 at Korat Royal Thai Air Force Base, Thailand, March 31, 2017. The annual multilateral exercise is aimed at improving combined combat readiness and interoperability between the Republic of Singapore air force, Royal Thai air force, and U.S. Air Force, while concurrently enhancing the three nations' military relations. (U.S. Air Force photo by Staff Sgt. Kamaile Chan)