Found at Osage Ambulances:

Type III Remount E450 ambulance sold to Roberts Park Fire Protection District of Justice, IL

Congratulations Roberts Park Fire Protection District on your recent Type 3 E450 ambulance remount!  

This from Martin Nowak:

This one is going to Station 2. It originally started on a 2009 Ford E-series before getting re-chassied again in 2013. 

Roberts Park FPD ambulance with new chassis

Roberts Park FPD ambulance with new chassis