When the squad disrupts a local gang's drug trade operation, the gang members declare war on Firehouse 51.
Severide makes a difficult decision that unfortunately means the end for him and Renee.
A child's life is in peril on the next Chicago Fire, Tuesday at 10/9c on NBC.
The new girl at work has her sights set on Severide.
At the scene of a brutal car accident, Mills springs into action to prevent a victim from committing suicide.
Yuri Sardarov, who plays Otis, discusses the upcoming drama in Chicago Fire's third season.
Casey issues an ultimatum on the next Chicago Fire, Tuesday at 10/9c on NBC.
Boden refuses to surrender his vulnerable firehouse.
Out of options, Casey delivers a baby himself at the scene of a car accident.
Dawson and Shay scramble to save a gunshot victim - and themselves - from the men who attempted to murder him.
The squad responds to a water rescue when a young boy falls into the icy waters of Lake Michigan.
Leslie checks on Kelly.
Stunt coordinator Rick Le Fevour dives into the precautions of creating the fire truck crash from "Just Drive the Truck."
Crazy Captain Cruz makes the hard sell on his unique brand of Chicago River cruises.
Monica Raymund describes Dawson's big save at her first fire and opines about her future as a firefighter.
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