There has been an ongoing discussion from a previous post regarding the history of the CFD Hazardous Incident Team apparatus 5-1-1. Below are several photos that illustrate how this unit has evolved over the years.
Chicago Fire Department 4-7-5

Before becoming a full-time hazmat unit, this 1979 Chevy Stepvan (G-418) was used for hazardous material incidents. It had the designation 4-7-5 and was part of the Emergency Preparedness & Disaster Services division. From the Bill Friedrich collection.

Chicago Fire Department Flying Squad 4 Mack MB Platt

This image shows Flying Squad 4 with their 1970 Mack MB/Platt unit, which later became part of HIT 5-1-1. From the Larry Shapiro collection.

Chicago Fire Department Flying Manpower Squad 1

This photo captures Flying Squad 1 at the CFD shops before it was repainted to become part of HIT 5-1-1. From the Bill Friedrich collection.

 

Chicago Fire Department Hazardous Incident Team 5-1-1

This 1970 Mack MB/Platt (G-306) previously served as Flying Manpower Squad 1. Taken by Bill Friedrich.

Chicago Fire Department Hazardous Incident Team 5-1-1

Another view of the Mack/Platt unit, captured by Larry Shapiro.

Chicago Fire Department Hazardous Incident Team 5-1-1

This 1990 Spartan Gladiator/Saulsbury (G-492) was the first unit specifically purchased for the full-time HIT. Taken by Larry Shapiro.

Chicago Fire Department Hazardous Incident Team 5-1-2

Today, Chicago Fire Department operates two full-time Hazardous Incident Teams using identical vehicles. This image is from Karl Klotz.

These images provide a visual timeline of how the CFD's Hazardous Incident Team has developed, showing the transition from older models to more specialized equipment designed for hazmat response.

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