A metaphorical badge of loyalty usually referenced as an item of travel gear when visiting a good friend in a tight spot.
“I’m visiting my buddy in the Army next week but he’s stationed at a pretty wild post, you know, murders, kidnappings, war brides, that kind of thing; so, I’ll definitely be packing my Kevlar neck gaiter.”
“Jesus, where’s he stationed, Fallujah?”
“Nah, Fort Bragg.”
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