prostitution and gangs. one of the things that will get us over the hurdle is making sustained buys and arrests out at some of these locations. >> our goal for today is actually these three, it's a friday, generally fridays, they're stocked up before the weekend. hopefully they'll be stocked up today. we should be able to get some buys. >> undercover dope buys. in a cook county sheriff's police operation known as room service, the case has been in the works for five months now. investigator walsh belongs to a team that's targeting 24 narcotics and firearms dealers, all of them based on the mannheim strip or in the surrounding township. >> we have to be careful because this guy is paranoid. if he sees a car sitting out there and people just sitting in it, he's going to automatically