Developed by United Defense & , Linebacker (M6) System – a variant of the fighting vehicle family integrates Stinger surface-to-air missiles on a modified M2-series vehicle. Unlike the standard , the Linebacker replaces the external TOW antitank missile launcher with a launcher carrying four ready-to-fire Stinger missiles. (The vehicle has a basic load of 10 Stingers.) The Linebacker’s sensor suite includes optical, TV and forward-looking infrared systems. The vehicle integrates into the Forward Area (FAAD) system trough combat net data networking. Position reporting is provided autonomously, vie the Enhanced Position Location Reporting System (EPLRS).