 In 1999, the United States Army began buying a limited number of M1117s (originally the ASV-150) for the Military Police Corps.This purpose-built ASV was derived from Cadillac Gage's previous Commando family of AFV which was used in Vietnam for base security.The ASV 150 is a much improved version of the earlier Cadillac Gage 100/150, with improved armor protection and better maneuverability due to the use of Timoney's independent suspension system.