Richard Dean Anderson Lt. Michael Brooks Actor, Executive Producer Denise George Tamara Actor Lillo Brancato Gaetano Luvullo Actor Firdous Bamji E.R. Doctor Actor Joe Brosi Firefighter Actor Gia Carides Charlotte Brooks Actor Morris Chestnut Andre Actor Tandy Cronyn Female Victim Actor David C Dangerfield Firefighter Actor Sara Dawson Supermodel Actor Timothy Devlin Police Sergeant Actor Edie Falco Kate Wilkinson Actor Jeffrey Force Willie Schillinger Actor Ray Grawin Firefighter Actor Murphy Guyer Det. Leo Patillo Actor Allyson Hamilton Betty Actor Juan Carlos Hernández Uniform Cop Actor Ed Hodson Fireman Actor Michael Imperioli Lt. O'Connell Actor Jacqueline Kreiss Rosalie Actor Sam Melisi Actor Charlotte Moore Catlin Connors Actor Carl Paoli Screaming Man Actor Phil Parolisi Diebold Actor Elizabeth Reilly Alice Schillinger Actor Pete Romeo Firefighter Actor Howard Safir Fire Commissioner Actor Philip Scozzarella Firefighter Actor Skip Sudduth Sy Actor Brian Tarantina Hooded Man Actor Tom Fontana Executive Producer, Writer Michael Greenburg Executive Producer