Chicago Fire

CHICAGO FIRE -- Season: 4 -- Pictured: Christian Stolte as Randy "Mouch" McHolland -- (Photo by: Paul Drinkwater/NBC)

CHICAGO FIRE -- Season: 4 -- Pictured: Jesse Spencer as Matthew Casey -- (Photo by: Chris Haston/NBC)

CHICAGO FIRE -- Season: 3 -- Pictured: Kara Killmer as Sylvie Brett -- (Photo by: Chris Haston/NBC)

CHICAGO FIRE -- Season: 4 -- Pictured: Kara Killmer as Sylvie Brett -- (Photo by: Chris Haston/NBC)

CHICAGO FIRE -- Season: 4 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: Paul Drinkwater/NBC)

CHICAGO FIRE -- Season: 4 -- Pictured: Dora Madison Burge as Jessica ?Chili? Clinton -- (Photo by: Paul Drinkwater/NBC)

CHICAGO FIRE -- Season: 4 -- Pictured: Monica Raymund as Gabriela Dawson -- (Photo by: Chris Haston/NBC)

CHICAGO FIRE -- Season: 4 -- Pictured: Eamonn Walker as Chief Wallace Boden -- (Photo by: Paul Drinkwater/NBC)

CHICAGO FIRE -- Season: 4 -- Pictured: Joe Minoso as Joe Cruz -- (Photo by: Paul Drinkwater/NBC)

CHICAGO FIRE -- Season: 4 -- Pictured: Taylor Kinney as Kelly Severide -- (Photo by: Chris Haston/NBC)

CHICAGO FIRE -- Season: 4 -- Pictured: Yuri Sardarov as Brian "Otis" Zvonecek -- (Photo by: Paul Drinkwater/NBC)