Tankers need to bring more stuff to the"game" than just water. We often use Union Fire Co Tanker 21 out of Oxford, PA as an example of a nicely designed tanker that brings some good stuff to a dump site. Besides its 3,000 gallons of water it can deliver twin, 3,000-gallon dump tanks, 40-ft of 6-inch suction hose, a top-performing low level strainer, a jet siphon, and some other often needed goodies. When Tanker 21 is the first-arriving tanker at a dump site it has a lot to contribute to the rapid build out of an effective dump tank operation. They have participated in a couple of our 2-hr drills and always were effective in their delivery.