. >> inmate gabriel perez is housed in 900 max for his own protection. >> a day in max is like hell basically >> he is a member of the notorious monta villa gang, said to be at war with the mexican mafia gang. >> you serve the first time, you learn you lesson. if you don't learn you lesson, just get used to it. and after the tears go away, it just doesn't matter anymore. it's just part of life for you. >> 28-year-old inmate joseph williams was just sentenced to 20 years for a double manslaughter. >> just take it one day at a time. i'm fortunate because some people in my situation get life. life without -- or the death penalty. i'm fortunate to have a date to look forward to. it's going to be really hard for me because i have a 3-year-old daughter, and from my calculation, she will graduate high school, and i won't be there to see her graduate high school. >> i'm fighting five counts of attempted murder of los angeles police s.w.a.t. >> this 44-year-old inmate first came to jail at the age of 17. after doing ten years of hard time at pelican bay state prison for manslaughter, he returned to l.