Thanks for posting that link!
Evidently not all of the people know the difference between the fire call and the nuclear accident tones. That's not good! Obviously, they should do a much better job at educating the public in those towns. They could publish a memo on the front cover of all the phone books in those towns, and on the inside of the doors in hotel rooms, classrooms, and maybe a detailed page in everyone's sample ballot. That way, it should be cleared up.
The attack wail could be exclusively for nuclear plant emergency, steady alert for fire, and maybe alert for 30 second intervals/ 30 seconds off for tornado? Whatever the case, the public will not be served well by uneducation and confusion.
And foremost, they should test once a month! Jee-whiz; a bird could nest, the armature could rust solid to the stator, and a vine could grow all the way up the pole and choke out the siren in a whole year of non-operation
Charles