I remember reading an interesting thread a while back about the evolution of the Chicago Fire Department's (CFD) Hazardous Incident Team (HIT) apparatus, specifically the 5-1-1 unit. It’s fascinating how much these vehicles have changed over the years. I came across some old photos recently that really illustrate this transformation.
Take this picture, for instance—it’s of a 1979 Chevy Stepvan (G-418), which was originally part of the Emergency Preparedness & Disaster Services team before it became a dedicated hazmat unit. Back then, they didn’t have specialized equipment like today; it was more about quick response and basic tools. The G-418 had the signature 4-7-5 markings, and it’s amazing to see how far we’ve come since those early days.
Fast forward a bit, and you’ll notice something interesting—Flying Squad 4 had a 1970 Mack MB/Platt vehicle that looked almost identical to what eventually became the 5-1-1 unit. If you look closely at the Flying Squad 4 photo, you can tell it served as a precursor to the dedicated hazmat trucks. It’s kind of poetic how one piece of equipment led to another.
Here’s another great shot—a Flying Squad 1 unit before it got its new paint job and became the iconic 5-1-1. It’s incredible to think about how much effort went into transforming these vehicles into specialized hazmat response units. Bill Friedrich captured this moment perfectly.
And then there’s the 1970 Mack MB/Platt (G-306), which initially worked as Flying Manpower Squad 1. Seeing it transition into the role of HIT 5-1-1 gives you a real sense of progress within the department. Larry Shapiro managed to get some fantastic images of these units during their heyday.
Of course, no discussion about the modern era would be complete without mentioning the first rig specifically designed for the full-time HIT. In 1990, the department acquired a Spartan Gladiator/Saulsbury (G-492). This marked a significant leap in capability compared to earlier models. It wasn’t just about having better technology but also ensuring firefighters were equipped to handle increasingly complex hazardous situations.
Today, Chicago operates two full-time Hazardous Incident Teams, each using nearly identical rigs. Karl Klotz snapped an excellent photo showing both units side by side. Having two teams means quicker response times and enhanced coverage across the city, which is crucial when dealing with emergencies involving dangerous materials.
Reflecting on all these changes makes me appreciate how far the CFD has come in terms of preparedness and professionalism. From humble beginnings with basic vans to state-of-the-art trucks capable of handling anything thrown at them, every step reflects dedication and innovation. As someone who follows this stuff closely, I’m always eager to see what new developments lie ahead!
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