Does the Northrop/McDonnell Douglas YF-23 "Black Window II" demonstrator built for the US Air Force's Advanced Tactical Fighter (ATF) competition still haunt the Air Force? No, not really, but that ...

The Advanced Tactical Fighter competition is often remembered as a clean win for the F-22 Raptor, but the losing prototype, ...

The Pentagon funded the YF-22 over the cheaper YF-23 when they knew it was a far more problematic warplane—purely out of a desire to keep Lockheed Martin alive. The late United States Air Force ...

The YF-23’s emphasis on stealth and long-range engagements over dogfighting cost it the race with the YF-22—but in hindsight, its vision was the more influential one.