U.S. Marines with Headquarters Company, Regimental Combat Team 7 (RCT-7), battle sight zero at a live fire range on Camp Leatherneck, Helmand province, Afghanistan, Oct. 17, 2012. RCT-7 conducted a battlefield zero to ensure their weapons function properly. (U.S. Marine Corps photo by Cpl. Alejandro Pena/Released)
Cpl. Alejandro Pena
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