Guest Stars Randy Flagler as Firefighter Harold Capp Jon Seda as Detective Antonio Dawson Steven R. McQueen as Jimmy Borrelli Nick Gehlfuss as Dr. Will Halstead Jason Beghe as Sergeant Hank Voight Brian White as Captain Dallas Patterson Fredric Lehne as Deputy District Chief Ray Riddle Eric Mabius as Jack Nesbitt Rachel Nichols as Jamie Killian Izabella Miko as Katya Antov Susannah Flood as Athena Bailey-Johnson Andy Ahrens as Firefighter Danny Borrelli Co Starring Anthony Ferraris as Squad 3 Driver Tony Ferraris DuShon Brown as Connie Marcus Hendricks as Police Officer Leah Bostic as Resident Courtney Rioux as Paramedic Courtney Phillip Edward Van Lear as FBI Special Agent Conway Brad Einstein as Ian Jack McLaughlin-Gray as Carl Ricky Wayne as Patrolman DeLuca Chris Rickett as Instructor Nicholas Vukasovich as Tomov Jarrod Zimmerman as Federal Agent Gregory Fenner as Pizza Delivery Guy David Midura as Tank Top Regina Saldivar as Alicia Donica Lynn as One Angry Resident Marcus Farne as Middle Management Type Uncredited Anne Lockhart voices Dispatcher