Of all my siren videos I think this is the remaining WORKING siren video not posted on this board yet. It failed to upload on YouTube so I uploaded it elsewhere.
http://tinyurl.com/2ehsdv (Photobucket)
http://tinyurl.com/2ktonj (Putfile)
It's the same video on both sites. The siren is at Waialae Beach Park in Honolulu. It's buried in a tree and watch the horn, it doesn't rotate.