One of our Twinsonics quit one day, and we remembered how good the Fireballs looked in our experiment, so we used a couple of Fireballs in the space in front of the model 12s full cascade mirrors of the bar to retain a warning signal to run calls until we could replace or repair the bar. However, after seeing how effective those Fireballs were with the mirrors, we removed and replaced the sealed beams with a Fireball on each end. We got lots of favorable comments, because open face reflectors were not in use just yet in lightbars, but Aerodynics were just about to hit the market.