Knowing that yellow (green) is the TOS uniform colour for command and tactical, blue for science and medical, and red for support disciplines. And that Uhura originally wore a yellow uniform (although it seems she was changed to red because it seems to suit her natural tones better). And that TOS broadly mimics the US Navy. Is it sensible to argue that Communications should be a command/tactical discipline not a supporting one? Communications as TOS Uhura portrayed it, seems to me to be a direct steal from US Navy COMINT. Technical and tactical communications, triangulating and tracking enemy location by their signals, code using (and by extrapolation) maybe breaking, manipulating the communications gear to overcome artificial and natural obstacles etc. And if that is so, that her role is more tactical than supporting and she should have stayed in yellow (green)? I guess the question is two fold. Am I right in seeing Uhura on that way? And, to any Navy or ex Navy folks out there, is COMINT tactical or support?