Marines with 2nd Battalion, 10th Marine Regiment, 2nd Marine Division, watch a CH-53E Super Stallion helicopter land while waiting to load their Expeditionary Fire Support Systems to conduct an aerial-raid mission aboard Marine Corps Base Camp Lejeune, North Carolina, July 30, 2014. The EFSS consists of an Internally Transportable-Strike Vehicle with a 120 mm mortar in tow, providing mobile fire support that bridges the gap between 81 mm mortars and the 155 mm cannons.