Andy Rooney told of a bomber that had it's landing gear shot up so bad it wouldn't deploy. They also couldn't get their ball turret gunner out. He just said it was "awful" but you can imagine the poor guy was just a red smear on the runway.
That being said, it has since been called an Urban Legend by historians. "Amazing Stories" had an episode called "The Mission" about a similar situation, but had a happier ending.
here's a pic of a guy getting into one during a flight in 2015.
The crews of those planes must have clanked when they walked.