Two teams competed: Northrop Grumman with the YF-23 and Lockheed Martin with the YF-22, which would become the F-22 Raptor.
The YF-23 competed in the Advanced Tactical Fighter (ATF) program during the Cold War but lost to Lockheed's YF-22, which ...
The Northrop/McDonnell Douglas YF-23A "Black Widow II," designed for the 1980s ATF program, competed with and ultimately lost ...
Ironically, the F-22 later faced delays and budget overruns, challenges the YF-23 might have avoided. What You Need to Know: In the 1980s, the U.S. Air Force launched the Advanced Tactical Fighter ...