HMA Fire Apparatus PROTEUS 3 ultra-high pressure brush truck is designed to attack on- and off-road fuel fires, forest and wildlands fires, interior structural fires and fires within parking garages, warehouses and other facilities. The brush truck also includes a Whelen emergency light and siren package, a Warn 12000 lb. front-mount winch, louvered headache rack and a Rhino front brush guard with winch mount. It is NFPA 1906 compliant. It is a Ford F350 chassis with 300 gallon water tank and 36 gallon foam tank.