A U.S. Air Force E-3B Sentry participates in Exercise Cope Tiger 15 at Korat Royal Air Force Base, Thailand, March 10, 2015. CT15 includes 22 total flying units and over 1,390 personnel from three countries and continues the growth of strong, interoperable and beneficial relationships within the Asia-Pacific region through integration of airborne and land-based command and control assets. (U.S. Air Force photo by Airman 1st Class Taylor Queen/Released)