U.S. Marines with 1st Battalion, 9th Marine Regiment, conduct training on Camp Leatherneck, Helmand province, Afghanistan, Dec. 20, 2013. The training was performed to teach the Marines to properly mark improvised explosive devices during a patrol. (Official Marine Corps Photo by Lance Cpl. Zachery B. Martin/Released)
Lance Cpl. Zachery Martin
Taken on 20 December 2013
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