Kyra Sedgwick Deputy Chief Brenda Johnson Actor J.K. Simmons Asst. Chief Will Pope Actor Corey Reynolds Sgt. David Gabriel Actor Robert Gossett Commander Taylor Actor G.W. Bailey Det. Lt. Provenza Actor Anthony John Denison Det. Lt. Andy Flynn Actor Michael Paul Chan Det. Mike Tao Actor Raymond Cruz Det. Julio Sanchez Actor Phillip P. Keene Buzz Actor Mary McDonnell Captain Sharon Raydor Actor Jon Tenney Special Agent Fritz Howard Actor Dennis L.A. White Reggie Moses Guest Star Tom Choi Tommy Wong Guest Star Jason George Martin Evans Guest Star Curtis Armstrong Peter Goldman Guest Star Mark Pellegrino Gavin Q. Baker III Guest Star Kevin Fry Corrections Officer Dyson Guest Star Arvin Brown Director James Duff Writer Mike Berchem Writer