Follows District 21 of the Chicago Police Department, which is made up of two distinctly different groups: the uniformed cops and the Intelligence Unit.

Procedural drama about the inner workings of the New York office of the Federal Bureau of Investigation.

It follows the division of the FBI tasked with tracking and capturing the notorious criminals on the FBI's Most Wanted list.

The Naval Criminal Investigation Service's Office of Special Projects takes on the undercover work and the hard to crack cases in LA. Key agents are G. Callen and Sam Hanna, streets kids risen through the ranks.

Follows a locally born and bred S.W.A.T. sergeant and his team of highly-trained men and women as they solve crimes in Los Angeles.