Airmen assigned to the 56th Fighter Wing climb an obstacle during a mud run event at Luke Air Force Base, Ariz., Sept. 28, 2017. The mud run was part of the Thunderbolt Cup, a two day, multi-event, Olympic style competition testing the physical and mental readiness of Airmen and offering a fun way to break away from daily routines. ( Air Force photo/Airman 1st Class Caleb Worpel)

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Size: 4928px × 3280px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 56th, air, base, fighter, force, fw, luke, thunderbolts, usaf, wing