has replaced. As you inferred from the headline, there is another Chicago Fire character that Damon reminds us of, and he was actually positioned to be the Casey successor before his sudden departure.

Severide (Taylor Kinney) and Boden's replacement bonded over ... even though it is removed from the days of Casey. Eigenberg also said of the Chicago Fire cast: We've had tough days when life ...

Jesse Spencer is officially back in action on Chicago Fire, and PEOPLE has your exclusive First Look! Spencer's beloved character Matt Casey is stepping back into the fire department on Wednesday ...