Maj. Gen. Andrew Gebara, center, incoming 8th Air Force and Joint-Global Strike Operations Center commander, renders a salute to Gen. Tim Ray, left, commander of Air Force Global Strike Command, during a change of command ceremony at Barksdale Air Force Base, La., August 16, 2021. A change of command is a military tradition that represents a formal transfer of authority and responsibility for a unit from one commanding or flag officer to another. (U.S. Air Force photo by Senior Airman Jovante Johnson)