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 YF-23 and YF-22. Northrop Grumman's YF-23, known for its stealth and ...

The YF-23 was Northrop’s radical stealth fighter prototype, built to dominate the skies—but despite being faster and stealthier than the YF-22, it ultimately lost the contract. Featuring ...

Chief configuration designer for the YF-23, Northrop’s contender for the Air Force’s Advanced Tactical Fighter (ATF) competition won by Lockheed’s F-22, Cummings continues to be active in ...