What you have there is a 1976 former air force P-4, the civilian side did call them a M-1500. They drive all right for a crash truck, if loaded they are much smoother to drive than empty since they were made to always have a full tank of water and foam. That one doesn't look in too bad of shape. I have driven ones that looked worse and shouldn't have been used as fire trucks anymore. Even had one catch on fire while we were training. I tried to stop the guy from putting it out. I am trying to remember some of the specs off them other than 1500 gal water tank so it could be a driving pool. If transporting or driving anywhere there is overhead obstructions you might want to remove the water overflow spout off the back right side. It is easy and will save damage. You might even be able to get more historical info on it since it still has the USAF reg number on it with the first 2 digits being the year of manufacture. 76L361 from what I can make out in the pic.
