Losing three key characters leaves a noticeable gap on <em>Chicago Fire</em>, and though Violet's love interest leaving the show isn't as big as losing main characters, things are changing within the team dynamics and emotional core of the show. While <em>Chicago Fire</em> has weathered cast changes before, this feels more jarring. Losing Carver & Ritter isn't ideal, in my opinion, and moving forward, the show either has to reinvent itself or risk losing the spark that made it so compelling in the beginning.