weapon. the cellmates are held in nearby shower cells while knight and demerey inspect their cell. >> sometimes we've been known to see these guys actually cut out a hole in the wall, cover it with toilet paper, toothpaste and a little dirt, make it look just like the side of the wall. and any seam can be a hole. been known to pull out cell phone shanks and marijuana at one time in one hole. >> they are close in the close management or cm unit, a high-security wing for inmates with disciplinary violations. roca moreno has been here for the past three years, due to a total of 15 disciplinary write-ups. >> what are you catching write ups for, the same thing over and over? >> no, no, the last one was for a cell phone. >> you had a cell phone? >> yeah, fighting a little bull [ bleep ] and then. >> what you get on cm for? >> possession of weapons. see them in a couple months now. >> sandier is suspected of being a member of the bloods and some