Boeing VC-25 Many of the VC-25's other capabilities are classified for security reasons. After a presidential inauguration resulting in a change in office, the outgoing president is provided transport on a VC-25 aircraft to their home destination. The aircraft for this flight does not use the Air Force One call sign because it is not carrying the president in office. For both Presidents Bill Clinton and George W. Bush, the flight was known as "Special Air Mission 28000", where the number represents the aircraft's tail number. The VC-25A has also been used to transport deceased former presidents. The guest area aft of
Boeing VC-25 of Lyndon B. Johnson. The current VC-25A aircraft are aging and have become less cost-effective to operate. The USAF Air Mobility Command investigated possible replacements, with early press coverage suggesting that the USAF would consider the Boeing 747-8 and the Airbus A380. On January 7, 2009, Air Force Materiel Command issued a new Sources Sought notice for a replacement aircraft to enter service by 2017 with an additional two aircraft to follow in 2019 and 2021. On 28 January 2009, EADS North America representing EADS and its Airbus division confirmed it would not respond to the US Air Force notice,