Young firefighters Blake Gallo (Alberto Rosende), Darren Ritter (Daniel Kyri) and new paramedic Violet Mikami (Hanako Greensmith) round out the roster as the firehouse's newest members. Jesse Spencer as Lieutenant Matthew Casey, Truck Company 81 (seasons 1–10; guest seasons 11–12 [5]) Casey is the lieutenant at Firehouse 51 and the officer in charge of Truck Company 81. However, she resurfaces later in the season, having somehow gotten a job in the CFD's Internal Affairs Division. He later transfers out after rebelling against the corrupt Deputy Chief Riddle who had been hoping to use him to oust Boden as Battalion Chief. Casey and Hallie have more problems in their shaky relationship, while Otis tries to solve the mystery behind Truck 81's goat mascot.

Meanwhile, the team draws the ire of local drug dealers who threaten the peace and safety of the neighborhood and firehouse---and shoot at the firehouse. D. aired a backdoor pilot of the short-lived legal drama series Chicago Justice, which ran from March 1, to May 14, 2017. On April 10, 2023, NBC renewed the series for a twelfth season, [3] which premiered on January 17, 2024. John Hoogenakker as Lieutenant Spellman (season 2): A firefighter assigned to Firehouse 51, along with Clarke, after city budget cuts force the downsizing of the department.

Wednesday Final Ratings: 'American Idol', 'Survivor', 'Modern Family', 'Criminal Minds', 'CSI', 'The Voice' Adjusted Up; 'How To Live With Your Parents' Adjusted Down".

She briefly dates Joe Cruz in season three and shares an apartment with Dawson prior to the latter's marriage to Casey. Housed here is ALS Engine 18, 2–2–1 (Deputy District Chief – 1st District), 2–1–21 (1st District Chief), 6–4–16 (High-Rise Response Unit), and ALS Ambulance 65. The station house used for exteriors in Chicago PD is just a few blocks away at 949 West Maxwell Street at Morgan Street (interiors likewise filmed at Cinespace). Mills finds himself the target of resentment from some colleagues when Severide supports his desire to join Squad.On March 27, 2013, NBC announced plans for a proposed spin-off of Chicago Fire, the police procedural drama Chicago P. As an experienced paramedic, Shay was the designated ambulance driver and was well-liked by the mostly male crew of 51. The Chicago Fire sports team accepted the shared name and showed the series premiere on October 2, 2012, at Toyota Park after a game with the Philadelphia Union. After her third partner, Jessica Chilton, is fired, Sylvie is promoted to Paramedic in Charge (PIC) (season 4). A native of the gangster-infested neighborhoods of Humboldt Park, he spends the first two seasons constantly trying to bail his wayward younger brother out of trouble.

Actor Taylor Kinney has said "If you (say) 'We're working on Chicago Fire,' they ask you if you're a soccer player. Guided by Battalion Chief Wallace Boden (Eamonn Walker, Oz), the committed crew features paramedic Sylvie Brett (Kara Killmer) and lieutenant Christopher Herrmann (David Eigenberg, Sex and the City) as well as firefighters Joe Cruz (Joe Minoso, Boss), Randy "Mouch" McHolland (Christian Stolte, Prison Break) and Stella Kidd (Miranda Rae Mayo, Pretty Little Liars). Previously with Engine 37, Mouch helped him when he froze up during a fire, and he ended up making his first save.Kathleen Quinlan as Nancy Casey (season 1): Matthew and Christie Casey's mother who was incarcerated for murdering their verbally abusive father and her husband Gregory in 1997, fifteen years prior to the beginning of the series.