Civil Defense Air Raid Siren . Air Raid Warning Civil Defense Siren at Top of Building Stock Photo Alamy The Model SD-10 (Special Dual-Tone, 10-Horsepower) is an omnidirectional, electromechanical civil defense siren that was produced by Federal Signal Chrysler air raid sirens came to life as more than 200 cities nationwide participated in the biggest air raid drill ever attempted
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This isn't an extensive siren catalogue by any means but I thought I would show some examples of cold war era sirens deployed for civil defense use "Red alert, attack imminent," a warning flashed into the headquarters of the civil defense network
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civil defense Air Raid Siren 3789628737 . They were the official Civil Defense sirens used in large U.S Going through many design changes throughout its life, these.