What's inside an Air Raid Siren?

29 Nov 2018 08:01 3,266
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How does an air raid siren make such a loud noise without electricity? Make sure to watch Mark's video of the World's Largest Air Horn!: https://youtu.be/pFEB0chiuJA

Watch the Behind the Scenes of our Day with Mark! https://youtu.be/rJIc1iAQdPw

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What's the loudest sound you've ever heard?

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