Vehicle would be problematic, as the only one remaining intact belongs to the talking team and is a few blocks away on the Imperials' flank.
Braxus is going to get supplies. People who want to go with him can recover gear from the supply room, which will improve your overall haul. Those who provide cover will make it harder for any Imperials trying to hit them with narrative shooting (which will have actual, not just narrative, damage attached to it).
I'm just curious, and too late now, but I thought the command center was between the supply room and the maintenance area?