If the difference between all the military branches is still confusing to you, well, this old meme is an example of Marine humor about airmenpic.twitter.com/fxSMzLOIE9
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(I am not a veteran, but what I've heard from hanging around veterans online trying to make my fanfic more authentic is that saying "permission to speak freely" is very Hollywood and the most you'll hear is an NCO going "meaning no disrespect" before saying something to a CO)
"permission to adjust" when you're stuck at attention and have a wardrobe malfunction is very real, however
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