I have been researching prisons because I want this to be as close to reality as I can. However this is a special prison. VERY HIGH security. There are the prisoners that are so violent they can only be trusted to mingle with other violent criminals. The guards would have to be ex-military or something to keep them in line. I will allow some of the prisoners jobs once they prove (or atleast pretend) to be cooperative. But right now only NPC inmates have jobs. So yes the guy serving would be an inmate. Keep in mind there are secrets within the walls of this prison that make it different then any real prison.