i'm just johnny lawman. i came out prior military and i chose this.appeared to be a good career. and it is. it's what you make of it. this is a business that you can't pick up in a college. you can't go to four years and they'll make you a qualified veteran in the department of corrections. cannot be done. >> there really is no down time when you can relax. so, i mean, stressful working here, but it's more stressful because of you're responsible for what happens to them. to what they do to each other. >>> when "lockup" returns -- >> the first guy, come on out. >> how pelican bay's security squad fights crime inside the prison walls. >>> to staff and inmates alike, they are known simply as the squad. >> we respond to every single incident that happens within this prison. that ranges from a fistfight to a stabbing to a homicide to narcotics that are discovered on an inmate. >> if a prison can be considered a city, the security squad is the police force within that city. pelican bay's nine-member unit responds to all crimes committed by inmates within th