Annual pump test performed by Sunbelt with their Draft Commander mobile testing platform. They set up in a central location and we bring trucks from all over the county to be tested. This is required to keep our Rating that allows our residents to obtain cheaper fire insurance rates. A truck that won't pass it's pump test doesn't exist in the eyes of the State Rating Bureau.
And isn't that a damn good looking truck for being a 1999?
BTW, algebra is involved in converting pitot pressure to gallons per minute.