it indicates gang activity has penetrated the sensitive needs yard or sny. >> it is supposed to be gang free. a lot of guys go into sny not because they want to. a lot of these guys still want to be gangsters. >> many of these inmates come to sny because they violated gang rules and now need protection from gang retaliation. >> the easiest way to describe it is that even though you walked away from the gang, it doesn't change your gang mental state because what happens is that you've already been trained by the gang. so it's easy, again, to reestablish yourself. >> it's a lot of them, they go into sny, they see these older inmates, weaker inmates and they band together again. whether as a formal gang, or four or five bigger guys that want to pressure other guys out of anything, money, clothing, food, anything they can get out of them. >> lieutenant munoz must now determine whether de la cruz is the victim of a gang or an active gang member himself, perhaps one that has asked for protective custody under false pretenses. >> sleeper is one of the names they use. he's a sleeper, he's comin

gang. so it's easy, again, to reestablish yourself. >> it's a lot of them, they go into sny, they see these inmates, weaker inmates and they band together again. whether as a formal gang, or four or five bigger guys that want to pressure other guys out of anything, money, clothing, food, anything they can get out of them. >> lieutenant munoz must now determine whether de la cruz is the victim of a gang or an active gang member himself, perhaps one who has asked for protective custody under false pretenses. >> kun aft one of the two names they use is a sleeper, sleeper is one of the names they use. he's a sleeper, he's coming in under radar. the other term is he is a torpedo. he is coming in and he has a target and he is going to find his target and explode on the guy. so i questioned him about that. >> while de la cruz still refused to give officials any information about the attack, later he was willing to tell us why he decided to drop out and seek protective custody. >> i've got a lot of homies from my hood. they are all like, 18, 19, 20 years old. all of them are in for burglary, robber