One thing you need a good supply line. Hemtts are cool truck. They make for good N-scale train flat car loads. This version going be up armored version later on. Reason for circle on top the cab. which is interesting seeing fuel tankers in some photos on the web with full gun carriage on them. Me personally being one the old timers who work and help develop these beast. Kind scary if hot casing ever hit the fuel. Now the cargo hemtts and others yes. But seeing fuel tankers?????