gacy was executed by lethal injection in 1994. the last execution to occur at stateville took place in 1998. since then, all illinois state executions occur in a different maximum security facility. until it's torn down, stateville's death chamber remains fully operational as an emergency backup system. with such a high concentration of violent criminals in the prison population, it was only natural that the violence would continue within the walls of stateville. over the years, a number of incidents occurred that still reverberate among the old-timers today. >> in the old days we had quite a bit of violence here. you got up in the morning, you'd take a couple of magazines, go out and carry your shank wherever you want. you didn't know what was going to happen. who you was going to fight. there was always trouble. >> i've been up here 11 years. the majority of the holes that you see around us are mine. i've seen officers beat up. i've seen inmates killed. i've seen them stabbed.