it wasn't just crowded, it was violent. in 2005, riots broke out. detainees went on a rampage, taking over whole sections of the prison camp. american forces massed outside the fences, firing into the crowd. at least four prisoners were killed. >> now, this is camp bucca. >> major general doug stone was brought in to fix camp bucca. even he was wary of the inmates. here he is giving cnn's nic robertson a tour in 2008. >> we have about 2,000 identified al qaeda in the facility. they're very hard to break. >> you have shields up here to protect us. everyone is crowded around looking at us now. >> this is not a place that you want to hang around. we don't want to stand here that much longer because they will now organize around us.