[s1e3] Professional Courtesy May 2026

: Characterized as a "dirty cop" from the start, Voight uses threats and intimidation to protect his son, Justin.

Witness the intense introduction of Detective Voight and the start of his long-running rivalry with Lieutenant Casey: A Warning | Chicago Fire One Chicago YouTube• Apr 22, 2020 Key Plot Developments

: Despite the external threats from Voight , the crew of Firehouse 51 pools their money—originally intended for a new TV—to build a wheelchair ramp for the paralyzed victim. [S1E3] Professional Courtesy

: Lieutenant Casey faces extreme pressure to cover for a drunk driver who paralyzed a teenager—only to discover the driver is the son of Detective Hank Voight.

: Kelly Severide learns he has a fractured vertebra but chooses to hide the severity of his injury and use painkillers to keep working. : Characterized as a "dirty cop" from the

: Candidate Peter Mills struggles with the choice between his commitment to the fire department and helping his mother with the family restaurant. Significant Moments

: Casey refuses to be intimidated by Voight , officially filing the report and setting off a multi-episode rivalry that defined the show's first season. : Kelly Severide learns he has a fractured

In the Chicago Fire episode (Season 1, Episode 3), the "deep feature" is the introduction of Hank Voight . This episode serves as the origin point for the character who would eventually lead the spin-off series, Chicago P.D. .