25th Fighter Squadron Operations at Osan Air Base
U.S. Air Force Senior Airman Tristan Barker, 25th Fighter Generation Squadron crew chief, performs post flight diagnostics on an A-10 Thunderbolt II at Osan Air Base, Republic of Korea, Jan. 4, 2023. Crew chiefs are responsible for maintaining a single aircraft through launch, recovery, inspection, troubleshooting and maintenance. (U.S. Air Force Photo by Senior Airman Trevor Gordnier)