http://www.military-today.com/trucks/m1070a1.htm The HET A1 Heavy Equipment Transporter was developed by Oshkosh. Its US Army designation is the M1070A1. This new tank transporter has a more powerful engine, armored cab and a number of other improvements, such as anti-lock brakes, traction control system and upgraded electrical systems. All major driveline components have been revised. The US Army has ordered more than 1 400 new tank transporters.