Tech. Sgt. Richard Malabey, 76th Expeditionary Depot Maintenance Flight maintenance section chief, shows Chief Master Sgt. Stanley C. Cadell, command chief, Air Force Materiel Command, examples of aircraft battle damage repair through an observation window on their C-135 maintenance trainer aircraft at Tinker Air Force Base, Oklahoma, June 8, 2021. (U.S. Air Force photo by Paul Shirk)