This from Jacob Metzler:

Went up to O’Hare last night, caught the new 7/7A with the fading sunlight. As far as I know, the order at Engine 9 is unchanged: Squad 7/7A, Command Van 273, MVU 9-2-4, Engine 9 and Medic 59.
Chicago FD Squad 7

Jacob Metzger photo

Chicago FD Squad 7A

Jacob Metzger photo