drugs are smuggled into the prison. traffic and abuse pose security problems. security officers conduct surprise shakedowns to find drugs. inmates are required to give urine samples. today's target is the protective custody unit. >> two-man teams. bring them out and set them down. >> 504. >> remember these guys are all in protective custody. put a little space between them. >> opposite end. >> among those to to be searched and tested are two of wabash's high-profile inmates, joshua bean and dustin trowbridge. >> open 504.