FROM: U.S. DEFENSE DEPARTMENT
U.S. Marines use optic sensors on vehicles to observe the surrounding area during a security patrol in Shorab in Afghanistan's Helmand province, Sept. 20, 2014. U.S. Marine Corps photo by Cpl. John A. Martinez Jr.
U.S. Marines patrol in a tactical column in Shorab in Afghanistan's Helmand province, Sept. 20, 2014. U.S. Marine Corps photo by Cpl. John A. Martinez Jr.