go-round. >> while stroud uses music to escape the restraints of prison many others turn to drugs. and despite the efforts of staff drugs are smuggled into the prison. trafficking and abuse pose security problems. corrections officers conduct surprise shakedowns to find and confiscate drugs. often with the use of a drug detection dog. 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.