milestone 200th episode on Wednesday, but it was a bittersweet one as the firehouse said goodbye to one of the leaders at 51, Lieutenant Matthew Casey, after he decided to relocate to Portland, Oregon, to lead the firehouse there in fighting forest fires.
The episode, which featured the return of a key storyline with the Darden boys from season 1, marked star Jesse Spencer's final episode as a series regular after more than nine seasons.During a press conference-style Zoom call with reporters earlier in the week, Spencer explained the «difficult» decision to exit the firefighter drama in season 10 during a monumental landmark moment for the OneChicago franchise.
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