Douglas VC-54C “Sacred Cow” The Douglas VC-54C Skymaster is the first aircraft purpose-built to fly the President of the United States. Carrying the staff transport “VC” designation, the aircraft was officially named The Flying White House. However, the aircraft became better known by its unofficial nickname, Sacred Cow, a reference to the high security surrounding the aircraft and its special status. More info in the comments. #avgeek | National Museum of the U.S. Air Force