I'm surprised they played the actual siren sounds with the matching photo! And md5, I believe the blue Allertor you are talking about was in Greenfield Wisconsin.
http://www.youtube.com/watch?v=uZNVLZSACMc
Honestly, people need to stay on track with these things. If the people rely on sirens, they need to get the coverage they need. And the media also needs to make it known that sirens are only meant for the people outdoors. Not very many people seem to understand that. Pick up a weather radio at radioshack fr $20, and you should be good.