[DaiPlusPlus]

FWIW I've got a female friend who was in enlisted the US Navy and she spoke of female naval officers who were addressed as "Sir" rather than "Ma'am" (though most went by "Ma'am").

So I don't know how to feel about anything anymore.

[SilasX]

That's a common trope in sci-fi -- I think Star Trek TNG and Battlestar Gallactica had the female officers addressed as "sir".