with age, the inmates tend to slow down with their poor behavior. they learn that arguing with authority figures is not the way to go. >> here's my rap sheet. like you can see, armed robbery, '74. these is all the charges, wanton endangerment in the first degree, assault, first degree. assault in the third degree, assault in the third degree, another assault in the third degree. another assault in third degree. them is all the charges i picked up in the prison system. so now things are different. see, i done growed up. >> while fleece johnson's violent acts are in his past -- >> open number 20. >> -- there is one inmate at ksp who is considered the most menacing. victor hiatt is serving a life sentence for murder. he has the reputation of being the most violent inmate in the state and had to wear restraints for this interview.