I loved the story about the F-117 (the hopeless diamond) in radar testing not showing up on the screen, so the radar operator told someone to go check to see if

I loved the story about the F-117 (the hopeless diamond) in radar testing not showing up on the screen, so the radar operator told someone to go check to see if the model fell off the stand. That guy stuck his head out the door and was about to say "no it's still there" when a bird landed on the model and the radar operator said "Oh, I see it now"