BBC World Service | National Park Service | Internal Revenue Service | Distinguished Service Order | bus | Special Air Service | United Parcel Service | Meritorious Service Medal (United States) | United States Postal Service | National Health Service | Meritorious Service Medal | Metropolitan Police Service | United States Forest Service | German Academic Exchange Service | Secret Intelligence Service | Immigration and Naturalization Service | Distinguished Service Cross | National Defense Service Medal | National Service | United States Secret Service | Royal Naval Air Service | National Weather Service | Agricultural Research Service | Special Broadcasting Service | Distinguished Service Cross (United States) | On Her Majesty's Secret Service (film) | On Her Majesty's Secret Service | Internet service provider | Bus Éireann | United States Foreign Service |
MCTS is a partner in the Southeast Wisconsin Transit System, a joint-venture transit partnership that also includes Waukesha Metro Transit and Wisconsin Coach Lines in Waukesha, Washington County Commuter Express operated by Riteway Bus Service in Richfield, Belle Urban System (THE BUS) in Racine and Kenosha Area Transit (KAT) in Kenosha.