The Scotty 4045-30, "Roll & Foam", Mobile Foam Attack System is a self-contained unit that can transform any pressurized fire hose, water supply line or stand pipe into a fire fighting foam generating station.  An average person can roll the unit to a pressurized water source near a fire scene even when the tank is filled to capacity with fire fighting foam concentrate (foam concentrate not included).  By following the instructions on the top of the tank, the user can deploy, set-up and spray foam in under a minute.