Partners Industrial Crane Rentals operates this twin steer Western Star with a National Series 1800 hydraulic crane. Although I didn't get a close look, it appears that the Star was fitted with the second steering axle by Simard Suspensions of Baie St-Paul QC. The National Crane is also mounted on an interesting custom platform with built in steps. The hydraulic power is provided by the truck using a front mounted PTO.
Partners has painted crossed Canada and Nova Scotia flags on the crane cab.