Tail washing... Tech. Sgt. Gavin Ball, an isochronal inspector with the 121st Air Refueling Wing Maintenance Squadron, Ohio Air National Guard, washes the tail of a KC-135 Stratotanker before inspection at Rickenbacker Air National Guard Base in Columbus, Ohio, July 12, 2023. Isochronal inspections are detailed inspections conducted every 18 months to ensure aircraft is properly maintained and mission ready. 📸 Airman 1st Class Ivy Thomas airnationalguard 121arw #airmen #airman #aircraftinspector #aircraftmaintenace #usaf #military