I don't like cops, and i don't like being owed money.
But, if somebody did owe me money, I'd rather it was a cop, with a pretty bomb proof income, that was somewhat tied to not being sued or having ethical/ financial problems.
I have been owed money by a buddy that was in law enforcement, my needs changed in a hurry and he made it right, got me other liquid assets that I could liquidate quickly.
Finding out he's a cop, my tune changes to making things in text, so there's a bit of a record, hey man, the 4 grand kind of jams me up, but I'm not sure I want tu hassle with selling your buick, what of timeline are you thinking? Then deal with collecting the money, in full, but late.