This from Mike Maida:

 Attached is a picture of Bloomingdale Tender 21, the 2011 Impel Pumper Tanker.  I saw this rig out and about and thought that this might be of interest as it has to do with the re-numbering of the rigs in DuPage County.

Mike Maida

Bloomingdale FIre Protection District Tender 21

Bloomingdale Fire District Tender 21. Mike Maida photo