Chicago Fire (2012)

S09E04 Funny What Things Remind Us

Title: Odd Triggers of Nostalgia Plot: During a routine assignment from headquarters, Boden stumbles upon an unexpected link to his past. Meanwhile, Gallo finds himself in a sudden predicament, needing to save a fellow firefighter following a construction site explosion. In the midst of this chaos, Mouch stirs the pot by reviving a long-standing rivalry.