The St. Paul,MN, Fire Dept., has put in service a 109-foot rear-mount aerial Viper built by Rosenbauer. The apparatus is built on a Rosenbauer RBM Commander cab and chassis powered by a Cummins engine and an Allison transmission. The tandem axle vehicle is also equipped with a Waterous CSU pump, a 500-gallon tank and an Onan 10,000-watt generator.