May 4th, 2011 Hamilton County, Ohio Outdoor Warning Siren test Ambience

This is the May 4th, 2011 Outdoor Warning Siren test in Hamilton County, Ohio. This video was taken from my front yard. Sirens heard are 2 American Signal T-128s, Thunderbolt 1000T, and possibly the Werden P-127 on the Cheviot City Hall. Growl: 1:30; Alert: 3:58; Attack: 5:55