Organizational Maintenance: Truck Tractor, Line Haul, 50,000 GVWR, 6x4, M915 (NSN 2320-01-028-4395); Truck Tractor, Light Equipment Transporter (LET), 56,000 GVWR, 6x6, w/Winch, M916 (NSN 2320-01-028-4396)