Tech. Sgt's John Kerschenheiter and Crystal Guetschow, along with Staff Sgt. Alex Bastow, perform maintenance inside the cockpit of a KC-135 Stratotanker on the flight line at Selfridge Air National Guard Base, Mich., Jun 11, 2017. The three Airmen work together as a single unit, uploading software to the aircraft’s central computing module.

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Size: 6048px × 4032px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 127th, 191st, maintenance, squadron, wing