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U.S. Army Staff Sgt. Salvador Guiterrez, a platoon sergeant with the 211th Armored Cavalry Regiment, prepares an opposing force surrogate vehicle (OSV) to receive a battery charge from another OSV at sunrise at the National Training Center on Fort Irwin, Calif., Dec. 5, 2010. The center is designed to train Soldiers for deployment. (DoD photo by Staff Sgt. Renae L. Saylock, U.S. Air Force)
