Staff Sgt. Brian Fielhauer and Senior Airman Otto Kelly service the engine of a KC-135 Stratotanker as part of the isochronal inspection process of the aircraft Sept. 14, 2013, at Selfridge Air National Guard Base, Mich. Kelly is a member of the 191st Maintenance Squadron at Selfridge ANGB. During the process, all components of the aircraft undergo an extensive inspection and preventive maintenance. Air National Guard photo/Tech. Sgt. Robert Hanet

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Photo credit: © Z2A1 / Alamy / Afripics
License: Licensed
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Keywords: .., air, base, defense, force, guard, kc-135, maintainence, mich., military, national, selfridge, states, united, war