I have never seen a Naval Challenge Coin in mylife and I ran spec ops on subs.
I know guys with MUC’s, NUC’s PUC’s and all kinds of BS
Maybe Flyboys are different.
See that my grave is kept clean..
https://www.youtube.com/watch?v=R9pcsiDBHqw
Better yet, let the wolves have me and let no man mess with my bones
Challenge coins started with pilots to identify themselves to the resistance.
You may have run spec ops, but you should read up on stuff a little.