Air Force Tech. Sgt. Zachary Pierce, 20th Equipment Maintenance Squadron non-destructive inspection craftsman, assembles a simulated bunker at Shaw Air Force Base, , March 18, 2016. The simulated bunkers are used as shelter for any Airmen outside when alarm red is called during an operational readiness exercise. ( Air Force photo by Airman 1st Class Destinee Dougherty)

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Size: 7360px × 4912px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: #20th, ems