South Dakota Army National Guard soldiers from the 1-147th Field Artillery battalion conduct hide and fight maneuvers with the M270A1 Multiple Launch Rocket System (MLRS) during annual training at Fort McCoy, WI. he M270A1 is an upgraded version of the American-made M270 MLRS (Multiple Launch Rocket System) designed and manufactured by the U.S. Company Lockheed Martin. The M270A1 MLRS is a combat proven, mechanized artillery weapon system that provides the combat commander with highly lethal, al