TINKER AIR FORCE BASE, Okla. — Members of the 507th Maintenance Squadron, assigned to the 507th Air Refueling Wing, perform a confined space rescue exercise from a fuel tank of a KC-135 Stratotanker on Tinker Air Force Base, Oklahoma, Dec. 9, 2025. This exercise is a yearly requirement for the Wing's Fuels Management Flight. (U.S. Air Force video by Senior Airman Katriel Coffee)