Cpl. Tyler Craven, a combat engineer with combat engineer company, Marine Wing Support Squadron 273, places a sandbag as part of a defensive tower to provide protection against simulated enemy assault during an annual training and readiness exercise aboard Marine Corps Air Station Beaufort, Aug. 14.
<br>Unit: Marine Corps Air Station Beaufort
Sgt. Marcy Sanchez
Taken on 14 August 2013
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