I saw some dam failure warning sirens in Alaska. They were mostly in narrow, valleys in mountainous areas, or bridges crossing them. Here’s a brief article abou

I saw some dam failure warning sirens in Alaska. They were mostly in narrow, valleys in mountainous areas, or bridges crossing them. Here’s a brief article about testing them: https://www.ktoo.org/2013/07/17/aelp-to-test-sirens/ https://www.ktoo.org/2013/07/17/aelp-to-test-sirens/