The MGM-140 Army Tactical Missile System is a tactical ballistic missile designed and manufactured by the US defense company Ling-Temco-Vought (LTV), and later Lockheed Martin through acquisitions. It uses solid propellant, is 13 feet (4.0 m) long and 24 inches (610 mm) in diameter, and the longest-range variants can fly up to 190 miles (300 km). The missiles can be fired from the tracked M270 Multiple Launch Rocket System (MLRS) and the wheeled M142 High Mobility Artillery Rocket System (HIMARS).