Guest Stars Randy Flagler as Firefighter Harold Capp Jon Seda as Detective Antonio Dawson Amy Morton as Desk Sergeant Trudy Platt Brian Tee as Dr. Ethan Choi Armand Schultz as Alderman Colin Becks Barbara Eve Harris as Commander Emma Crowley Liza J. Bennett as DHS Secial Agent Alex Ward Co Starring Anthony Ferraris as Squad 3 Driver Tony Ferraris DuShon Brown as Connie Steve Chikerotis as District Chief Steve Walker Sam Porretta as Paramedic Chief Hatcher Robin Robinson as TV Anchor Steve Wojtas as SWAT Leader Carson Hicks Andy John Roesgen as TV Anchor Angelica Roque as Paramedic Patrick Gannon as Asthmatic Victim Brandon Markell Holmes as Young Man Clayton Louis as Alderman's Aide Darian Tene as Screaming Woman Doug McDade as DHS Superior Emily Berman as Jen Brenner Wardell Clark as Security Guard Uncredited Anne Lockhart voices Dispatcher