Guest Stars Christian Stolte as Firefighter Randy "Mouch" McHolland Joe Miñoso as Firefighter Joe Cruz Yuri Sardarov as Firefighter Brian "Otis" Zvonecek Sarah Shahi as Renee Royce Domenick Lombardozzi as Corrections Officer Lucci Nestor Serrano as Rick Esposito Richard Cabral as Inmate Rios Co Starring Randy Flagler as Firefighter Harold Capp Robyn Coffin as Cindy Herrmann Lucas VonKampen as Luke Herrmann David VonKampen as Lee Henry Herrmann Amanda Calabrese as Annabelle Herrmann Logan Vosburgh as Max Herrmann Molly Glynn Hammond as ER Doctor Cheridah Best as Nurse Cindy Chang as Mari Boise Holmes as Officer Fojas Angela Friis as Burn Victim Dan Latham as Officer Keefer Jeremy Earl as Randall Katie Oellerich as Civilian Aide Todd Rader as Chicago Police Officer David Hernandez as Acevedo Phil Ridarelli as Facilities Roy Uncredited Anne Lockhart voices Dispatcher