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 Billy Burke Phillip Stroh Guest Star Jonathan Del Arco Dr. Fernando Morales Guest Star Ransford Doherty Kendall Guest Star Kathe E. Mazur D.D.A. Andrea Hobbs Guest Star Adrian LaTourelle Douglas Grand Guest Star Graham Patrick Martin Rusty Beck Guest Star Chris Schauble Reporter No. 1 Guest Star Michael M. Robin Director James Duff Writer Mike Berchem Writer