The DFMA maintains a Mobile Communications Unit.  This is a van that contains a generator, air conditioner, and is outfitted for emergency communications.  It is designed to operate under emergency conditions and to provide a base for hams providing emergency communications support in disasters or for public service events.

MCU at DurhamFest 2007 (photo by KF4PAB) 

MCU work party with N4UBH testing and NC4CD in background (photo by KB4TYE)

Look at the Picture Gallery for more MCU pictures.