1990–1997 thumb|An artist's impression of the McDonnell Douglas/General Dynamics A-12 Avenger II aircraft. It was planned for the U.S. Navy but canceled in 1991 due to high cost.
1990–1997 thumb|An artist's impression of the McDonnell Douglas/General Dynamics A-12 Avenger II aircraft It was planned for the U.S. Navy but canceled in 1991 due to high cost