I thought this was interesting what I found on the Nashville news station of counties with no sirens. The counties that had no sirens, well had the higher death tolls. Of course they are showing ATI sirens with 2001 sounds. I love that Kevin Penny(EMA director of Davidson County, also a world class idiot) makes excuses why Nashville has not expanded their system in 5 years since the initial system went up. This is the kind of video that makes me so mad!
http://www.wsmv.com/video/15249007/index.html