This from Fred McCahey:

As seen around O’Hare 9-12-16 … changing out a spare rig

Chicago FD Squad 7A

Fred McCahey photo

Chicago FD Squad 7A

Fred McCahey photo

Chicago O'Hare Airport Fire Department

Fred McCahey photo

Chicago FD Squad 7

Fred McCahey photo

Chicago FD O'Hare Airport MVU

Fred McCahey photo

Chicago FD O'Hare Airport Engine 9

Fred McCahey photo

Chicago FD Comm Van 2-7-3

Fred McCahey photo

reserve fire engine at O'Hare Airport

Fred McCahey photo

Chicago FD Battalion 13

Fred McCahey photo

Chicago FD Battalion 13

Fred McCahey photo