A R-12 Refueler Mobility Unit (R-12) waits at check point for a regular mandatory operational inspection June 10, 2016, Travis AFB, Calif. The inspection includes the recirculation of fuel, pressurizing the hoses and giving them a visual check. ( Air Force Photo by Heide Couch)

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Size: 3600px × 2432px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

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