Firehouse 51 has had some big shakeups lately. Chicago Fire recently parted ways with beloved cast member Kara Killmer, who played Sylvie Brett, and is now parting ways with Rome Flynn’s character, Derrick Gibson. He, in turn, was brought in to replace Alberto Rosende, whose character Blake Gallo left the show. Perhaps to compensate, the series is bringing in actor Jocelyn Hudon (Acapulco, Romance with a Twist), not to mention Taylor Kinney rejoining the cast as Kelly Severide. Learn all about it below.