Second Lt. Evan C. Malone, the watch officer for 2nd Supply Battalion, 2nd Marine Logistics Group’s combat operations center training exercise, briefs COC personnel during the unit’s first day of simulations aboard Camp Johnson, N.C., Dec. 19, 2012. The unit used the base’s Marine Air-Ground Task Force Integrated Systems Training Center to test their chain of command structure during a series of operations conducted on digital simulators.