From the Fire Service, Inc. Facebook page:

North Palos FPD Engine in cab weld.

fire truck being built

Fire Service, Inc. photo

fire truck being built

Fire Service, Inc. photo

Glencoe Department of Public Safety Engine Body in Welding Area:

fire truck being built

Fire Service, Inc. photo

Hometown Cab in Welding Area

fire truck being built

Fire Service, Inc. photo

fire truck being built

Fire Service, Inc. photo

Bloomingdale FPD HP100 RM cab weld and body weld

fire truck being built

Fire Service, Inc. photo

fire truck being built

Fire Service, Inc. photo