Three members of the Royal Thai air force board a U.S. Air Force E-3 Sentry Airborne Warning and Control System (AWACS) for a mission during exercise Cope Tiger 17 at Korat Royal Thai Air Force Base, Thailand, March 28, 2017. The E-3 provides airborne command and control, long-range surveillance, detection and identification information, further maximizing interoperability between the U.S., Thai and Singapore militaries which is essential in tackling non-traditional security challenges such as maritime security and terrorism. (U.S. Air Force photo by Staff Sgt. Kamaile Chan)