On Chicago Fire Season 3 Epsidoe 4, it is Dawson's first day as a candidate and she is put through the ringer as a candidate both personally and professionally. The guys do not treat her any differently than they treated Jones when she first started, and it is tough to do all of the cooking and cleaning while expecting to be razzed at every turn. Meanwhile, Severide has another late night and that turns into a rescue when shooters are on the El Train. The conductor is shot and Severide not only needs to attend to her wound but to help her off the train to safety and then bungle with the shooters. Chicago PD arrives on the scene and everyone is saved. Severide continues to feel poorly about losing Shay, but others are finally taking notice and helping him with some of the tough stuff. Mills has his first day on the job as a paramedic, and his worth ethic as a firefighter carries through to his work as a healer. He is incredibly helpful and even better than Brett, who is mired in personal issues. He needs to know she's there. Find out all about it when you watch Chicago Fire Season 3 Episode 4 online.