Advertising and self-marketing smooths your passage through an American airport,.......allegedly.
They lurve their military - "thank you for your service" - and they pander to them, also the police too. Most septic servicemen travel in uniform as it generally gets them quicker service through the queues - "this way to the crew/first class security line". I see loadsa people milling around airports in uniform, or simply carrying a blatant duty/issue daysack, some just wear polo shirts with their military unit affiliation embroidered on the left tit, travelling plod tend to wear a polo shirt with their sheriff/PD logo on the left tit.
I travel wearing jeans, or chinos, and a blazer, I have a set of US para wings on the lapel (yes I was presented with them), or sometimes I wear one of the two US plod polo shirts I was given - when one was given to me the bloke actually said, "that'll get you through security quicker on your way back to the UK". On the way thorugh TSA generally give me the nod, ask me if I have served and then wave me to the first class/crew security check, a couple of times American Airlines have even let me board early too.
Unbelievably, I was on holiday in the Youessofay and wearing the ARRSE Purple Forces polo shirt from the campaign years back which has a prominent Union Jack on it. Standing in the queue minding my own business, a security bod asked what the shirt was, so I explained. He was ex forces and that was it, this way Sir, bring your family with you and whoosh, head of the queue and thank you for your service.
Edit to add, it’d probably be seen as a war crime here, particularly in an airport that may or may not have been mentioned often and recently which may or may not have a particularly pronounced feature in it’s population demographic locally.