I remember doing a stint of guard cdr at ISK in mid-late 90's and becoming aware of a tactic that the RAFP employed.
They would watch for people leaving their Sqn/ messes after a beer call or function and watch them getting into their cars to drive home at the end of the night. Instead of stopping them at the first opportunity, or even stopping them leaving the camp, the RAFP would call the civvie police with the description and registration of the car and allow the civvies to deal with the drink/drive incident.
I am not sure if the incident I am aware of (and no it wasn't me!) was a one-off or a regular occurence, but I could not believe that the RAFP would allow someone to drive off camp suspecting they had been drinking.
Hopefully no one was ever injured or killed by any driver that the RAFP knowingly let drive off camp, but ever since that incident I have never trusted the RAFP.
On a slightly lighter note, only the RAFP could come up with a poster saying
POLICE Thieves operating in this area
And they usually were the police.
Y_G