[s1e3] Professional Courtesy May 2026

: 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.

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 [S1E3] Professional Courtesy

"Chicago Fire" Professional Courtesy (TV Episode 2012) - IMDb : Casey refuses to be intimidated by Voight

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. . [S1E3] Professional Courtesy

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