Business Insider recently traveled to Fort Sill, where our reporter got to train on two short-range air-defense systems.

short-range Avenger air defense system is the Army's premier shoot-on-the-move air defense weapon. It is a lightweight, highly mobile, easily transportable surface-to-air missile fire unit with ...

however it had a much lower rate of fire and was significantly less reliable than the GAU-8. The Oerlikon offering suffered a malfunction once every 900 rounds, while the Avenger suffered one ...