>> on this day, prison intelligence has warned officers that a gang-related attack might occur at dinner. >> tonight, we're expecting some type of problems. possibly. so we have some extra coverage tonight to provide security. >> a member of a gang is in risk of reprimand for not fulfilling a direct order. >> they asked them to participate in their gang. if they refuse, they are disciplined. and the discipline being slashed. >> it doesn't matter how much staff we have. they will erupt if it's going to. >> officers are tense, watching for any signs of trouble. pepper spray is at the ready.