Col. Thad Middleton, 22nd Operations Group commander, exits a KC-135 Stratotanker after finishing a fini-flight June 22, 2021, at McConnell Air Force Base, Kansas. The fini-flight is an Air Force tradition marking pilots' departure from a unit, or the last time they fly an aircraft. (U.S. Air Force photo by Airman 1st Class Zachary Willis)