MIL-PRF-44408C, PERFORMANCE SPECIFICATION, SHELTER, ELECTRICAL EQUIPMENT, LIGHTWEIGHT (31 OCT 1996) [SUPERSEDING MIL-S-44408B]., This document covers three types of lightweight electrical equipment shelters designed for transport on both the M1037 and M1097 High Mobility Multipurpose Wheeled Vehicle (HMMWV). These shelters are transported by rail, air, marine and highway when mounted or dismounted from their vehicles.