Cloey was a fire tanker truck in service at a hunting camp in upper Michigan. The tank has since been removed and the truck repainted it's original red. She spent about 60 years garaged and maintained as a working tanker truck, and she put out a few fires as well.
The I'm not sure if, (like early Dodge power wagons) Chevys were also made for the civilian market; Cloey may be Military in origin, like a crash truck. The PTO still operates a pump under the rear of the bed.