DVD Region 4. District 21 of the Chicago Police Department is made up of two distinctly different groups. There are the uniformed cops who patrol the beat and go head-to-head with the city's street crimes. And there's the Intelligence Unit, the team that combats the city's major offenses, organized crime, drug trafficking, high-profile murders, and beyond.. Actors: Jason Beghe, Jesse Lee Soffer, Patrick John Flueger, Marina Squerciati. Director: Mark Tinker, Eriq La Salle and Others. Languages: English. Subtitles: . Running Time: 946 minutes approx. Discs: 5