After announcing his intention to resign the presidency, Nixon boarded SAM 27000 (with call sign "Air Force One") to travel to California. Colonel Ralph Albertazzie, then pilot of Air Force One, recounted that after Gerald Ford was sworn in as president, the plane had to be redesignated as SAM 27000, indicating no president was on board the aircraft. Over Jefferson City, Missouri, Albertazzie radioed: "Kansas City, this was Air Force One.