pendleton's juvenile segregation unit, staff must always be prepared for violence. 19-year-old ulysses sanders about the demons that brought him here. >> locked up four years. beat up my mama's boyfriend and i took his money. >> sanders says his uncontrollable anger comes on without warning. he hopes school and counseling at pendleton will quiet his rage. two years ago, before the facility made major changes in programs in security, sanders was part of this attack on staff. >> we was all in the room. and then one of the offenders came up for a shower. that was all before it was all locked down like this. and he ran over here. he grabbed the key from the officer. and ran back to the other side. and started opening doors. >> door violation. door violation. door violation. >> that's when it all went out of control. >> door violation. door violation. >> he came out of the room, started throwing buckets. and some people had mop sticks. throwing mop sticks at staff. battered officers. damaged stuff. i don't know. it just built up. when it's happening, you don't even think about it. i don't regret it