Medical personnel with Alpha Surgical Company, 1st Medical Battalion, 1st Marine Logistics Group (Forward), treat a simulated patient inside a Mobile Trauma Bay at Camp Dwyer, Afghanistan, April 27. An MTB is an armored container on top of a Logistics Vehicle System Replacement, consisting of one doctor, one nurse and three corpsmen, that brings medical treatment closer to the battlefield. - Medical personnel with Alpha Surgical Company, 1st Medical Battalion, 1st Marine Logistics Group (Forward), treat a simulated patient inside a Mobile Trauma Bay at Camp Dwyer, Afghanistan, April 27. An MTB is an armored container on top of a Logistics Vehicle System Replacement, consisting of one doctor, one nurse and three corpsmen, that brings medical treatment closer to the battlefield.