This one with the challenge coins is pretty funny they had those in the Air Force as well course only the desk jockeys care about them it goes off about like that when someone does start sporting one.
In the Marines a POG is anyone with a non combatant job.The Air Force equivalent would be a desk jockey(I'm sure that do something important at that desk) in comparison to a mechanic or a cop or a CE someone who works on their feet all day.
http://terminallance.com/2010/04/06/...a-grunt-thing/