MABAS is a mutual aid organization that has been in existence since the late 1960s. Heavily rooted throughout northern Illinois. MABAS now includes over 750 member fire departments organized within 75 divisions. MABAS first came to Wisconsin in 1987 with the joining of the Village of Pleasant Prairie in Kenosha County. MABAS divisions geographically span the states of Illinois, Wisconsin, Indiana, Missouri, Michigan, and the other states, i.e. Minnesota, Iowa, and Ohio, are considering joining. There are 42 established Wisconsin divisions (as of June 2012) who share MABAS with the 62 divisions established in Illinois.