two tubular arms 144 145 however other configurations may be used and are included within the scope of the invention the barrier component is elevated from the stored position to the deployed position by movement of the swing arm powered by energy from the gas generator pushing the piston within the cylinder and extending the piston rod attached to one end of the swing arm the first end 132 of the swing arm 130 is hingeably attached to a first end of the piston rod 150 the second end not shown of the piston rod is attached to a piston head not shown contained within the annulus of the cylinder 155 the operation of the piston within the cylinder will be readily understood by persons skilled in the art simply stated the piston head can move longitudinally along the axis of the cylinder annulus the back end 156 of the cylinder is closed the front end 157 of the cylinder is partially closed with the piston rod extending though the end allowing the piston rod to move along the longitudinal axis of the cylinder annulus in response to movement of the piston head the cylinder may also be attached to a subcomponent 192 of the barrier housing.