This from Mike Summa:

TBT  This was Bridgeview’s E15, a 1970 Pierce/Oshkosh 1500/500.  Enjoy and comment.
Bridgeview FD E15, a 1970 Pierce/Oshkosh 1500/500

Bridgeview FD E15, a 1970 Pierce/Oshkosh 1500/500. Mike Summa photo