Orlando Arocho and Dallas Tyler

U.S. Marine Corps Sgt. Orlando Arocho and Lance Cpl. Dallas Tyler, both riflemen with Weapons Company, 3rd Battalion, 3rd Marine Regiment, discuss the nomenclature and capabilities of the AT-4 anti-tank weapon, right, while providing security during an operation in the Khowst province of Afghanistan Feb. 5, 2005. Marines with 3rd Battalion, 3rd Marine Regiment are conducting security and stabilization operations. (U.S. Marine Corps photo by Cpl. James L. Yarboro/Released)