The Northrop Grumman B-2 Spirit was, until last year, the world's most advanced stealth strategic bomber aircraft in the world. It's gradually being replaced by the B-21 Raider, but the B-2 is still a technological marvel.
The B-2 has been out of production since 2000, so parts can be hard to find. Aviation Geek Club shares a story from Brian Edwards, a technician who worked on the B-2 while serving in the Air Force. Years ago, a B-2 needed, for the first time, a replacement windshield. The manufacturer had none and couldn't make new ones without extraordinary expense.
But the company had sold a surplus of the windshields to a private citizen. The Air Force reached out to this man and, for an undisclosed sum, purchased them. He had been using the windshields for his daughter's treehouse.
-via Ace of Spades HQ