Guest Stars Randy Flagler as Firefighter Harold Capp Jon Seda as Detective Antonio Dawson Marina Squerciati as Officer Kim Burgess Jesse Lee Soffer as Detective Jay Halstead Jason Beghe as Sergeant Hank Voight LaRoyce Hawkins as Kevin Atwater Sophia Bush as Detective Erin Lindsay Christine Evangelista as Paramedic Allison Rafferty Dylan Baker as Doctor David Arata Amanda Righetti as Dr. Holly Thelan Sammy Sheik as Nizar Avi Lake as Imogene Aimée Laurence as Zoe Silver Francis Guinan as Fire Commissioner Co Starring Anthony Ferraris as Squad 3 Driver Tony Ferraris Steve Chikerotis as District Chief Steve Walker Karen Aldridge as Dr. Kendra Perrington Clarence Norwood as Firefighter Clarence Norwood Cheridah Best as Nurse Brett Snow as Firefighter Brett Snow Gregory Anderson as FBI Special Agent Scoville Erik Hellman as Dr. Alec Willhite Emily Bennett as Nurse #1 Brett Schneider as Patrick Vaughn Summer Smart as Greta Leena Kurishingal as Nurse #3 Darren Stephens as Homeland Security Agent Stephen Anderson as State Police Uncredited Anne Lockhart as Nurse
