cell house 220 at iowa state penitentiary houses the most disruptive inmates in the entire state. this is administrative segregation, also known as ad seg. >> the first time i entered ad seg, i was completely blown away by the cacophony of noise. every single prisoner seemed to be screaming at the top of their lungs and every single scream was an insult directed toward someone else. >> iowa state penitentiary is a maximum security institution, and there are challenges every day just by a virtue of the type of inmate we have here. many are here because of their lengthy sentences but an awful lot of them are here by virtue of their conduct at other prisons. this is the end of the road for