Step into the world of the YF-23, the stealth fighter prototype that competed head-to-head with the YF-22 in the U.S. Air Force’s Advanced Tactical Fighter (ATF) program during the early 1990s.Developed by Northrop and McDonnell Douglas, the YF-23 was faster and stealthier than its rival—but ultimately lost the competition to what would become the F-22 Raptor.This video features rare footage of low- and high-speed taxi tests, its historic first flight, and its current display at the National Museum of the U.S. Air Force.Discover the story of the jet that could have shaped the future of air combat—yet was left behind.0:00 Intro1:04 Low Speed Taxi Test2:51 High Speed Taxi Test4:52 First Flight6:40 On Display