An Air Force F-16 Fighting Falcon receives fuel from a 909th Air Refueling Squadron KC-135 Stratotanker off the coast of Guam, Feb. 21, 2017. The aircraft is assigned to the 18th Aggressor Squadron. Both aircraft units and U.S. Pacific Command units are training with Japanese and Australian forces to participate in the exercise Cope North. Air Force photo by Senior Airman John Linzmeier