Shaggy S D, from what I remember that incident into MAN was a 737. I was one of the engineers on duty that evening and had to debrief the crew and sign off the tech log.
Never seen anyone so white as that Captain before or since. They saw something that scared the bejeezuz out of them. It may have been a stealth type craft or something more enigmatic, who knows? But what ever it was they couldn't explain it. Scared the willies out of me and that was just listening to them!!