BBC World Service | National Park Service | Internal Revenue Service | Distinguished Service Order | Mobile, Alabama | Special Air Service | United Parcel Service | Meritorious Service Medal (United States) | United States Postal Service | National Health Service | Meritorious Service Medal | T-Mobile | 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 | mobile phone | National Service | United States Secret Service | Royal Naval Air Service | National Weather Service | Agricultural Research Service | Special Broadcasting Service | Mobile phone | Distinguished Service Cross (United States) | telephone | On Her Majesty's Secret Service (film) |
typically used the Mobile Telephone Service (MTS), which was first used in St. Louis, or Improved Mobile Telephone Service (IMTS) before giving way to analog cellular service (AMPS) in 1984.