Special Guest Stars Marina Squerciati as Officer Kim Burgess Nick Gehlfuss as Dr. Will Halstead Jason Beghe as Sergeant Hank Voight Jesse Lee Soffer as Detective Jay Halstead LaRoyce Hawkins as Kevin Atwater Yaya DaCosta as Nurse April Sexton Patrick John Flueger as Officer Adam Ruzek Marlyne Barrett as Charge Nurse Maggie Lockwood Tracy Spiridakos as Detective Hailey Upton S. Epatha Merkerson as Sharon Goodwin Dominic Rains as Dr. Crockett Marcel Torrey DeVitto as Dr. Natalie Manning Lisseth Chavez as Officer Vanessa Rojas Guest Stars Randy Flagler as Firefighter Harold Capp Daniel Kyri as Darren Ritter Alberto Rosende as Blake Gallo Tim Hopper as Captain Tom Van Meter Kristen Gutoskie as Chloe Cruz Aaron Serotsky as Dr. David Seldon Eileen Galindo as Mama Garcia Co Starring Anthony Ferraris as Squad 3 Driver Tony Ferraris Steve Chikerotis as District Chief Steve Walker Michele Martinez as Paramedic Michele Martinez Ahmed Lucan as Jared Julian Hester as John Sorenstein Michelle Bester as 2nd Paramedic Tiera Dudley as Woman Julia Germeroth as Clerk Gillian Hemme as College Student Bryan Eng as Harrison Marguerite Genard as Hazmat Member Joe McCauley as Mailman Dylan Obrochta as Stuart Anderson Ann Hagemann as Lila Eunji Kim as Veronica Song Bryan Bosque as Paramedic Calvin Thomas as Tailgater Robin Robinson as Newscaster Colt Cabana as Hazmat Leader Andrew White as Bruno Geller Lucy Carapetyan as Administrator Uncredited Anne Lockhart voices Dispatcher