A plaque showcasing U.S. participation in a previous iteration of Exercise Pitch Black hangs at the exercise headquarters among many other plaques from various nations at Royal Australian Air Force Base Darwin, Australia, Aug. 13, 2018. This year’s biennial multinational large force employment exercise is the largest since its inception, involves 16 nations, 140 aircraft and more than 4,000 personnel. (U.S. Air Force photo by Staff Sgt. Hailey Haux)