The M142 High Mobility Artillery Rocket System (HIMARS) is a light multiple rocket launcher. The M142 HIMARS is a lightweight, air-transportable, wheeled variant of the M270 MLRS tracked vehicle rocket launching system based on the MTV chassis. It will fire any rocket or missile in the MLRS family of munitions (MFOM). The HIMARS fires either six MLRS rockets or one Army Tactical Missile. The HIMARS launchers have some commonality with their older and heavier tracked cousins, the M270 and M270A1 launcher systems. The HIMARS design concept includes the familiar launcher module, fire control, and digital command and control systems and a self-reload capability.