U.S. Air Force Tech. Sgt. Zachary Pierce, 20th Equipment Maintenance Squadron non-destructive inspection craftsman, assembles a simulated bunker at Shaw Air Force Base, S.C., March 18, 2016. The simulated bunkers are used as shelter for any Airmen outside when alarm red is called during an operational readiness exercise. (U.S. Air Force photo by Airman 1st Class Destinee Dougherty)
<dl><dd>Unit: 20th Fighter Wing Public Affairs</dd></dl>
Airman 1st Class Destinee Sweeney
Taken on 18 March 2016
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