Fort Worth Texas Old Siren System Page 2 Old Fort Worth Page 1 Old Fort Worth Page 2 Old Fort Worth Page 3 Sirens Main Back to Civil Defense Museum Main		Fort Worth, Texas Old Siren System Page 2 Here are 38 photos of 34 sirens from my second trip to Fort Worth. A few photos are of the same siren. I have highlighted these with a different color frame to show which photos go together. One siren had it's power disconnected and there was no lock on the box so I opened it and took photos of the radio. My most interesting find on this second trip is the Thunderbolt at the bottom of the page. This siren has the bar grille inside the opening of the horn. I have never personally seen a horn like this but have only see the bar grille in very early photos of the Thunderbolt. Click any thumbnail to see larger photo.