Marines with 6th Marine Regiment, 2nd Marine Division, watch a simulated assault during a training command post exercise Sept. 18, 2013, inside the II Marine Expeditionary Force Simulation Center aboard Marine Corps Base Camp Lejeune. “Having been in COCs (command operation centers) before in Afghanistan, it is amazing how many similarities are right our simulated exercise,” said Maj. Kemper Jones, the operations officer with 6th Marines, from Richmond, Va.