This from Mike Summa for #TBT:

For TBT-Posen Squad 2823, a 1991 Pierce Lance rescue pumper with a Waterous 1500-GPM pump and a 500-gallon tank.
Mike Summa
1991 Pierce Lance rescue pumper

Mike Summa photo

And from the Chicagoareafire.com files:

1991 Pierce Lance super command cab pumper

Larry Shapiro photo