In 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.

The vaunted F-22 has been grounded with a possible faulty oxygen system since May. Production of the last few Raptors is even on hold, because the jets can’t fly from the factory. . .