How to Transfer Water Between Portable Tanks and Draft

[@philrogers8160]

1st question: when I was a volunteer our commercial engines didn't have a front suction. Had a rear suction or tank fill. Our engines had 1000 gal tanks. 2nd question: can tank 3 be put behind E-57 so more tankers can unload simultaneously (2-4)?? This would work best on a state road (ideal conditions). Town roads might be challenging or add in dead end roads.