mechanical skills. and he knows if he does something wrong, he'll lose a good job. >> but officer barnes' trust only goes so far. >> i maintain a visual on him at all times. we inventory the box on a daily basis, make sure all the screwdrivers, anything that can be used as a tool is there, not altered. he has done a good job. probably worked for me for four months now. he's worked out pretty well. >> i believe that will cut now, sir. >> let's see it. >> while john smith might be one of the more trusted inmates at santa rosa, another portion of the population is always on staff's radar. security threat group coordinators knight and demerey gather intelligence on prison gangs. during a cell search of bobby sandier and alfredo roca moreno, they found gang-related material