of the jail where it's even harder to do time. disciplinary segregation. >> when you're on disciplinary segregation you've been found guilty of some sort of charge inhouse. the restrictions for disciplinary segregation is you have the mattress removed from the cell from 5:30 in the morning until 9:30 at night so you have your concrete bunk. you get no linens, no magazines and no books. you are allowed one religious work and you are not allowed to attend programs and you are fed a nutritional food loaf every day of the week except for sunday. >> most inmates wind up here for fighting or other acts of violence. robert barr's sore is a little more unusual. >> i started a fire in my alarm clock, trying to light something. >> trying to light what? >> just something to smoke. and i got caught doing it. >> like a cigarette?