Staff Sgt. Robert Cook, 791st Maintenance Squadron mechanical and pneaudraulics section Global Strike Challenge team chief, performs annual maintenance on a transverse drive sprocket at Minot Air Force Base, , May 30, 2017. Cook is responsible for overseeing the team’s work performed on the 91st Missile Wing’s nuclear-certified equipment. ( Air Force photo/Senior Airman Armstrong)

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Size: 2634px × 3688px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 17, 2017, 791st, 91st, afb, air, base, challenge, dakota, force, global, gsc, maintenance, maps, mechanical, minot, mxg, mxs, north, pneaudraulics, section, strike