Marines with Combat Logistics Battalion 6, 2nd Marine Logistics Group drive a Medium Tactical Vehicle Replacement through rough terrain during a three-day field exercise aboard Camp Lejeune, N.C., Dec. 11-13, 2012. Servicemembers with the battalion received classes during their field exercise on vehicle check points, loading and unloading trailers, maneuvering trailers, and crew-served weapon assembly and disassembly.