From the Fire Service, Inc. Facebook page:

Representatives from E-ONE and Fire Service Inc. were on hand at O’Hare International Airport to help provide in-service training to the Chicago Fire Department as they work with their recently delivered new Tower Ladder 63. This 100’ rear-mount platform boasts Federal Signal LED lighting, a 5” stainless steel aerial waterway, 5” front suction, severe duty interior, and painted ROM rollup doors. In addition to it’s full ladder complement, this custom apparatus boasts many unique storage features that will serve the CFD and Chicago’s international airport for many years.

E-ONE Cyclone HP100 rear-mount platform aerial

Fire Service, Inc. photo