An Airman assigned to the Royal Australian Air Force’s (RAAF) 13 Squadron stands for a photo in front of a U.S. Air Force B-52H Stratofortress at RAAF Base Darwin, Australia, April 4, 2018. RAAF Darwin and members of the 13th Squadron hosted the bombers during a week-long Enhanced Air Cooperation exercise, designed to improve interoperability between U.S. Air Force aircrews and Australian joint tactical air controllers. RAAF members had the opportunity to tour the visiting aircraft and familiarize themselves with features of the long-range bomber. (U.S. Air Force photo by Staff Sgt. Alexander W. Riedel)