I found this video on YouTube yesterday, I love the sound of its roar, and I think that the Thunderbolt siren is at home in tornado alley.http://www.youtube.com/watch?v=wtnGpy-ZH1c
Federal Signal Thunderbolt Series, still the King of Air Raid Sirens!
I still wish they made those things. they were one loud siren. the 2001's are good but they just ain't the same. thank god some towns still have the t-bolts in working order.