This from Chi-Town Fire Photos:

Here is an updated list and assignments for CFD OFI. Stationed out of Engine 16’s Firehouse now at 53 E Pershing Rd. OFI Headquarters is also at Engine 16. They took over the South EMS Division side of the firehouse. I believe the South Side EMS Division is now out of Engine 84’s house. 

 
OFI 4-6-6 – 2015 Ford Explorer FDB604
OFI 4-6-7 – 2018 Ford E350 FDB622
OFI 4-6-8 – 2015 Ford Explorer FDB606 
OFI 4-6-9 – 2018 Ford E350 FDB625
Chicago FD OFI 467

Chi-Town Fire Photos

Chicago FD OFI 468

Chi-Town Fire Photos

Chicago FD OFI 466

Chi-Town Fire Photos

Chicago FD OFI 469

Chi-Town Fire Photos

Chicago FD OFI units

Chi-Town Fire Photos