Once you are sentenced to time in federal prison, you won’t necessarily have to serve all of the time that you have been sentenced to inside of an actual prison. In many situations, a prisoner can be granted parole which will allow them to leave the prison and live life in the normal world. There are conditions of parole that these people must follow even when they’re out.
Parole is a good way to obtain an early release from federal prison. In the federal court system you are able to apply for parole after you have served one third of the time that you were sentenced to. Requests for parole are considered based on details of the initial crime and behavior while inside of prison as well. If parole is denied, you can reapply after a set amount of time.