Funny you say that. My cousin works as a correctional officer at salinas prison out here in CA, it's a pretty rough prison, and she said she'd rather work there then at a women's facility.
As far as an inside job, as some have said...I doubt it. I have lots of friends in LE, and when I joke around with them about stuffing some money in their pockets after a drug bust, every one of them says no way they'd risk their job over something stupid like that. Your not going to risk your life, job etc over some scumbag and end up behind bars yourself.