Professional Courtesy is the third episode of the first season of Chicago Fire. This episode aired on NBC on October 24, 2012.

Plot Summary

The episode begins with Truck 81, Squad 3, Ambulance 61 and Battalion 25 responding to a call of a car crash.

Matthew Casey is forced to make a difficult decision about whether or not he wants to report bad-cop's Detective Hank Voight's son for DUI.

Kelly Severide finally makes an appoinment to see the doctor about his injured arm which turns out to be a fractured vertebra.

Candidate Peter Mills finds that sharing his time between his mom and her restaurant and his own job at the Chicago Fire Department difficult.