U.S. Marines with 2D Combat Engineer Battalion, 2nd Marine Division, use a Bridging Erection Boat Mark III to pull the improved ribbon bridge (IRB) while conducting IRB training at Onslow Beach, Camp Lejeune, N.C., May 19, 2015. The IRB training was conducted to maintain the Marines’ capability to support transportation of heavy military loads across rivers and small bodies of water. (U.S. Marine Corps photo by Lance Cpl. Chloe Nelson 2D MARDIV Combat Camera/Released)