Marines with 2nd Battalion, 8th Marine Regiment, 2nd Marine Division, perform a functions check on an AT-4 anti-tank weapon during a live-fire exercise aboard Marine Corps Base Camp Lejeune, N.C., Oct. 16, 2014. The two-day exercise tested the Marines’ capabilities with the AT-4, the M72 light anti-armor weapon and the MK-153 shoulder-launched multipurpose assault weapon systems. (U.S. Marine Corps photo by Lance Cpl. Lucas J. Hopkins/Released)