Traveler, I'm a freightdog on L10s out of MIA. Most of our flying is in the Caribbean and in Latin America, and believe me, the further south you go from MIA the more braid you need and the more exotic the caps etc get. As long as you look the part, you don't get hassled by the airport authorities - but if you turn up scruffy and without the uniform (including cap) they'll regard you with major suspicion.
And a decent cap (mine, along with my uniform comes from Tally Ho on NW36St)with a waterproof lining is great for keeping balding heads dry in rainshowers.
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