Superior Air-Ground Ambulance Service, Inc. and its affiliates (Illinois Medi-Car, Inc.; Metro Paramedic Services, Inc.; Norcomm Public Safety Communications, Inc.; Air Med 1; and Paramedic Billing Services, Inc.) are headquartered in Elmhurst, Illinois with multiple locations in Illinois and Indiana. Superior Air-Ground Ambulance Service of Michigan, Inc. is headquartered and has several locations in the Detroit metropolitan area.