 Ever since 2016, Canada has also used the Spike (ATGM).In the United States Army, Avenger air defense artillery battalions will be assigned to a theater or corps, and may attach air defense platoons to a brigade combat team or maneuver battalion.SHORAD units are based upon a mounted platform, the AN/TWQ-1 Avenger, which utilizes the FIM-92 Stinger missile coupled with a FLIR, laser range finder, and a M3P .50 caliber machine gun for close-in defense.