507 ARW
Senior Airman Josh Hines and Senior Airman Adrian Condit, crew chiefs from the 507th Aircraft Maintenance Squadron, close an outboard engine cowling on a KC-135 Stratotanker at the end of a -7 inspection Sept. 3, 2015, at Tinker Air Force Base, Okla. All U.S. Air Force KC-135 Stratotankers require an inspection every 900 flight-hours. (U.S. Air Force photo/Tech. Sgt. Lauren Gleason)

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