U.S. Air Force Brig. Gen. John C. Walker, 378th Air Expeditionary Wing outgoing commander, renders a final salute to Lt. Gen. Joseph T. Guastella, commander Air Forces Central Command, during a virtual change of command ceremony at Prince Sultan Air Base, Kingdom of Saudi Arabia, June 12, 2020. As the wing's first commander, Walker was hand-picked to lead the 378th AEW to provide additional deterrence and ensure the U.S.'s ability to defend its forces and interests in the region. (U.S. Air Force photo Staff Sgt. Giovanni)