Summary: In the 1980s, the U.S. Air Force sought to replace the F-15 with a new fighter jet, spurring a competition between ...
The Northrop/McDonnell Douglas YF-23, a fifth-generation stealth fighter developed in the late 1980s as part of the U.S. Air ...
The Boeing YF-118G "Bird of Prey" was an experimental aircraft developed in the 1990s to test advanced stealth technologies.