There has been a thread running from a previous post about the history of the CFD Hazardous Incident Team apparatus 5-1-1. Here are several photos which describe the changes over the years.
![E.P.D.S_475__1979_CHEVY_STEPVAN_____G-418__USED_FOR_HAZMAT_BF Chicago Fire Department 4-7-5](http://chicagoareafire.com/blog/wp-content/uploads/2011/06/E.P.D.S_475__1979_CHEVY_STEPVAN_____G-418__USED_FOR_HAZMAT_BF.jpg)
Prior to becoming a full-time haz mat unit, this 1979 Chevy Stepvan (G-418) was used for haz mat incidents. This unit, with a signature of 4-7-5 was assigned to the Emergency Preparedness & Disaster Services. Bill Friedrich collection.
![CFD FS4-LS Chicago Fire Department Flying Squad 4 Mack MB Platt](http://chicagoareafire.com/blog/wp-content/uploads/2011/06/CFD-FS4-LS.jpg)
An image of Flying Squad 4 with their 1970 Mack MB/Platt unit which was identical to the unit that was later reassigned to HIT 5-1-1. Larry Shapiro collection
![FLYING_MANPOWER_SQUAD_1_PRIOR_TO_BECOMING_HAZMAT_511_BF Chicago Fire Department Flying Manpower Squad 1](http://chicagoareafire.com/blog/wp-content/uploads/2011/06/FLYING_MANPOWER_SQUAD_1_PRIOR_TO_BECOMING_HAZMAT_511_BF.jpg)
This shot is of Flying Squad 1 at the CFD shops prior to being repainted for 5-1-1. Bill Friedrich collection
![CFD_HAZARDOUS_INCIDENT_TEAM_5-1-1__1970_MACK_MB-PLATT_G-306_X-FLYING_SQUAD_1_BF Chicago Fire Department Hazardous Incident Team 5-1-1](http://chicagoareafire.com/blog/wp-content/uploads/2011/06/CFD_HAZARDOUS_INCIDENT_TEAM_5-1-1__1970_MACK_MB-PLATT_G-306_X-FLYING_SQUAD_1_BF.jpg)
1970 Mack MB/Platt (G-306) formerly saw service as Flying Manpower Squad 1. Bill Friedrich photo
![CFD 5-1-1-LS Chicago Fire Department Hazardous Incident Team 5-1-1](http://chicagoareafire.com/blog/wp-content/uploads/2011/06/CFD-5-1-1-LS.jpg)
Another shot of the Mack/Platt unit by Larry Shapiro
![CFD_Spartan_Saulsbury_511-LS Chicago Fire Department Hazardous Incident Team 5-1-1](http://chicagoareafire.com/blog/wp-content/uploads/2011/06/CFD_Spartan_Saulsbury_511-LS.jpg)
The first unit purchased specifically for the full-time HIT was this 1990 Spartan Gladiator/Saulsbury (G-492). Larry Shapiro photo
![CFD 512 KK Chicago Fire Department Hazardous Incident Team 5-1-2](http://chicagoareafire.com/blog/wp-content/uploads/2011/06/CFD-512-KK.jpg)
Chicago now staffs two full-time Hazardous Incident Teams that use identical rigs. Karl Klotz photo