The Mennonite Disaster Service (MDS) is a volunteer network through which various groups within the Anabaptist tradition assist people affected by disasters in North America. The organization was founded in 1950 and was incorporated as a 501(c)(3) non-profit organization in 1993. A quarterly newsletter called Behind the Hammer is published. The volunteer amateur radio group Mennonet provides communication services for MDS. Radio equipment was first deployed by MDS in 1960.