MIL-DTL-46714 Semitrailer Van: Electronic, Tactical, 6-Ton, 2-Wheel, M373A2This specification covers the M373A2 van semitrailer, which is a 6-ton, tactical, 2-wheel, van-type semitrailer having an interior length of 30 feet \(ft\). The semitrailer is primarily used to transport and house electronic processing equipment over all types of roads and limited cross-country terrain and under extreme climatic conditions. These mobile shelters are also used as maintenance shops and command posts \(see 6.1\).