Air Force Senior Airman Castulo performs preflight checks on a KC-135 Stratotanker at Al Udeid Air Base, Qatar, April 6, 2016. Airman Castulo is an aerial refueling specialist from the 340th Expeditionary Air Refueling Squadron. ( Air Force photo by Tech. Sgt. Nathan Lipscomb)

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Size: 3865px × 2075px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

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