Finally, in the season 12 finale, Chicago Fire bid farewell to original cast member Eamonn Walker, marking the end of his 12 seasons as a series regular in the role of Chief Wallace Boden.

Follows both the professional and personal lives of the firefighters, rescue personnel, and paramedics of the Chicago Fire Department at the fictional Firehouse 51 as they risk their lives to save ...

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For 12 seasons, Chicago Fire ... to the Chicago Fire Department after a decade in Miami to serve as the chief. NBC announced in late July that Dermot Mulroney had been cast as Chief Pascal.