Army Sgt. Benjamin Stocker, Colorado National Guard CH-47 flight engineer and mechanic, puts a washer into place Feb. 19, 2016, at the Army Aviation Support Facility on Buckley Air Force Base, Colo. As a part of installing a new droop stop spring, the washer kept the helicopter blades from falling too low during flights. ( Air Force photo by Airman 1st Class Gabrielle Spradling/Released)

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

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