A Marine with 2nd Medical Battalion, Combat Logistics Regiment 25, 2nd Marine Logistics Group observes the performance of service members going through a virtual convoy at the Lockheed Martin Combat Convoy Simulator aboard Camp Lejeune, N.C., Oct. 18, 2013. Marines used stationary vehicle bodies (High Mobility Multipurpose Wheeled Vehicles or Medium Tactical Vehicle Replacements) and large projection screens that displayed computer-controlled terrain.