sentences:  The United States Marshals Service, a federal agency, was created in 1969.Since June 1975, the Marshals Service have the mission of providing law enforcement support and escort security to United States Air Force LGM-30 Minuteman and missile systems from military facilities.In 1989, the Marshals Service was given the jurisdiction over crimes committed relating to U.S. personnel in Antarctica and has been doing so ever since.