OK – I know this seriously dates me but…. when I was a kid they used to have air raid siren tests, and the sound was the most horrible, fingernails on the chalkboard, fear inducing sound I’ve ever heard in my life. To this day, I’ve never heard anything so disturbing. I used to get scolded because I would run around with my hands over my ears screaming and crying. It was like it hurt my soul to hear it!! Now I know how dogs feel when ambulances go by 
