"his time as a flight surgeon in the United States Navy inspired Top Gun filmmakers, as his callsign was 'Iceman' and producers visited his squadron to do research.
"I was very surprised when the movie came out, and it had an 'Iceman' in it. And I tell ya, it ruined the callsign from then on - it was just terrible. Like, thanks a lot, can I just be Doc or something like that now?""
https://www.abc.net.au/listen/programs/perth-breakfast/vf-radio-birdman-deniz-tek/12702270