In my career field, coin rank doesn't mean ****. In our line of work, it's the suck up's that don't know how to do their job that end up with the high-ranking coins.
Our rules are as follows:
1. Anyone with a Weapons coin can issue a "coin check."
2. Once the "coin check," has been issued by slamming a Weapons coin on the bar or dropping the coin into an empty pitcher, all Weapons personnel must present their Weapons coins in a similar manner.
3. Anyone unable to present a Weapons coin must purchase the next round of drinks for everyone who was able to present a Weapons coin. In the event that multiple personnel were unable to present coins, they will split the tab evenly unless the higher ranking personnel choose to pay the majority of the tab, or pay the tab in it's entirety.
4. In the event that everyone at the bar is able to present a Weapons coin, the Airman that issued the "coin check," must then pay for the next round.
Did I mention that we're Weapons troops?