Marines with 2nd Supply Battalion, Combat Logistics Regiment 25, put on their personal protective equipment in preparation for a Humvee Egress Assistance Trainer at Marine Corps Base Camp Lejeune, N.C., Jan. 7, 2015. The purpose of the training was to teach the Marines about the dangers during Humvee rollovers and how to properly react if ever faced it. - Marines with 2nd Supply Battalion, Combat Logistics Regiment 25, put on their personal protective equipment in preparation for a Humvee Egress Assistance Trainer at Marine Corps Base Camp Lejeune, N.C., Jan. 7, 2015. The purpose of the training was to teach the Marines about the dangers during Humvee rollovers and how to properly react if ever faced it.