welcome to the Merk industries HT20 6x6 heavy transport SGAA.This unit has been outfitted with the SGAA (Scorpion Ground Air Attack)missile weapon system. This system utilizes motion tracked multi missile platform which addapts both optical, radar and satelite data in real time for extremely precise ground to air defense. The operator of the weapon system need only activate the system with the 2 top left buttons, then activate the air to air targeting system as this has been adopted from an aircraft originally, then it is only a matter of selecting the target and firing on lock. There is also a hand stick control for the firing sequence should the procedure take place while vehicle is in transit. This is a hydrostatic transmission drive vehicle, which operates the forward and reverse transmission by way of a lever on the left side of the driver seat.This truck is also equipped with a winch activated by switch 1 and 6 wheel steer on switch 2. the wheel triggers will operate the brakes of this vehicle. please enjoy.