on the west bank of the mississippi river is one of the oldest prisons in the country, iowa state penitentiary. there is a separate facility at iowa state penitentiary called ccu, the inmates who are considered mentally ill are housed here. lieutenant john fedler oversees the correctional staff at ccu. >> the staff have been through specialized training to be able to deal with the mentally ill inmates. >> up to 200 men can be housed at ccu. most of them reside in single cells in one of the four general population pods. >> i am here for depression. i was out on work release. i escaped from a work release center because i couldn't find a job. i robbed a bank in my hometown where the work release center was. i got in a high-speed chase with state troopers of missouri and local law enforcement. i hit one of the state troopers head-on, trying to commit suicide. and i killed the state trooper. i got 20 years fed, and 5 years for escape. i got a detainer in missouri for -- >> open 11. >> 22-year-old caleb etter's physical appearance is a testimony to his many crimes, beginning with an addiction to me

at iowa state penitentiary, we found that the most brutal violence is sometimes against one's self. >> open 11. >> 22-year-old inmate caleb suffered severe burns over two-thirds of his body when the methamphetamine lab he was running exploded. when we interviewed him, he was also serving time for both sexual assault and for attacking a peace officer. >> i pushed everything to the limit because, as you can tell, i'm unstoppable. i think nothing can stop me. nothing will ever kill me. i thought i would die. reality check. i'm not. >> in spite of his calm demeanor, a few hours after this interview, etter got into a verbal confrontation with a female correctional officer that quickly escalated. cert, the correctional emergency response team, was called in to extract him from his cell. >> he's banging his head on the door, banging the glass, refusing to comply with orders. >> for security reasons the prison videotapes all extractions. >> you ready to move? keep your hands down. all the way. >> open b-11. >> a mask is placed over his head to prevent him from spitting. >> let's go. initially

. >>> james "t-bone" taylor was one of the most respected inmates among inmates at iowa's animosa state penitentiaryr doing good but being a two-time cop killer but when one of the victim's sister for gave him, he inspired a group called s.a.v.e. seriously acknowledging victim's emotions. >> this group is like after-care. you know, it get guys chance enough to come and sit down and find out why they have behaviors that they have. >> our cameras rolled as inmates involved in the program met with families of victims. >> our past action implied we had no regard for human life. today we know what it is feel, see hear and all the insanity and destruction and this whole thing is about not us coming up here looking for pity because we're not looking for pity. what we're looking for is an understanding that we know we did wrong. >> well, it affects me in a sense because i know that the impact in these later years what i done and i don't do this to think i'm getting out of the penitentiary because i'm not but it give me a sense of understanding. it give me a sense of responsibility for my own actions. >> the