In the past few decades, the U.S. Air Force has spent untold billions researching and developing a family of stealth fighter jets that are supposed to be generations ahead of any dogfighters in the sky.
But after building more than 170 F-22 Raptors and a handful of F-35 Joint Strike Fighters, not a single one is available for service. The Air Force currently has zero flyable stealth fighters. None. What happened?