at a neighboring correctional institution, the staff in the shu deal with a variety of mental behaviors. >> there are those that are dangerous people, that you have to be very cautious of when you interact with them. >> inmate douglas mccombs, who is serving time for burglary, has spent three months in the security housing unit at wabash. >> since he's been inside the shu, he's been in a stripped cell. when you see a offender come out of the cell, and all he's wearing is his underwear, at that time he was on strip cell. we had trouble with him on about every range we put him on so far. >> say, i got a mental disorder, or they say i do. they say i got a mental disorder. they say schizophrenic disorder. i can't get along with people too much, especially when they're evil. >> officer sachtjen has been working in the shu since 1997. >> an average day in the shu can be pretty mundane. you have recs and showers to do, md, sick call and so on and so