U.S. Air Force Lt. Gen. Gregory Guillot, incoming commander of U.S. Air Forces Central Command, accepts command from U.S. Marine Corps Gen. Kenneth McKenzie, commander of U.S. Central Command, during a change of command ceremony at Al Udeid Air Base, Qatar, July 16, 2020. Guillot is the 17th commander in AFCENT history. (U.S. Air Force photo by Tech Sgt. Monica Ricci)