Staff Sgt. Robert Cook, 791st Maintenance Squadron mechanical and pneaudraulics section Global Strike Challenge team chief, tests the controls of a guided missile maintenance platform 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.

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Size: 1195px × 1673px
Photo credit: © Ted Small / Alamy / Afripics
License: Licensed
Model Released: No

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