[throwup238]

Federal minimum security prisons don't have fences surrounding the prison so the only thing keeping prisoners from "escaping" is the extra five years that'd be added to their sentence. They have far fewer guards and the prisoners live in dormitory style quarters so it's far more like adult summer camp than prison (commonly referred to as "Club Fed"). Instead of having services on site they'll often drive the prisoners to a local dentist or doctor, etc.

As they get closer to release or if their sentences are short enough, prisoners can even get work release which allows them to leave the prison during the day to work at a regular job. (I think the GP is confusing work release and parole - the Federal system does have work release)