Oshkosh to modernize U.S. Army heavy vehicles in $146.8M contract By (0) Oshkosh Defense received a $146.8 million U.S. Army contract to modernize the U.S. Army's fleet of the Family of Heavy Tactical Vehicles. Photo courtesy of Oshkosh Defense May 3 (UPI) -- Contractor Oshkosh Defense announced a three-year extension of its contract with the U.S. Army on Monday to build heavy vehicles, valued at $146.8 million. The extension calls for modernization of vehicles in the U.S. Army and U.S. Army Reserve Family of Heavy Tactical Vehicle, also known as FHTV, fleets, which include 354 Heavy Expanded Mobility Tactical Trucks, or HEMTT, and Palletized Load System, or PLS, trucks, as well as the construction of new PLS trailers.