Dude stop trying to think you are SO smart and clever, you're sounding like a jew.
Challenge Coins, good thing, military takes part in this as well, you don't got a coin you gotta buy the beer.
It also really easy for Cmd/COs to hand VERY SENSITIVE INFORMATION (usb FLATdrive) on the coin, IN PUBLIC, to lower class rank if the chain of command is COMPROMISED.
-mil anon,
i refrained from swearing at you