For decades Darley PTO (power takeoff) pumps have been used in wildland firefighting by many state and federal agencies to eliminate the need for booster pumps in wildland firefighting scenarios. These PTO pumps are most notably used in Type 3 vehicles, in many cases eliminating or at minimum lessening, the necessity for wildland firefighters to hump booster pumps up steep terrain commonly found in the areas where wildland fires are prevalent.