Early 1950's Ward LaFrance 750A. Large numbers of these were built for the US Air Force. They carried 750 GPM pumps, 175 gallon water tanks and 40 gallon foam tanks.
Not too difficult to figure out the reason for the nickname! Reminds me of the famous Bedford "brick" water tenfder in later years, which also looked like the box it came in...
Added by John Harris on 11 August 2013.