If you hear a loud noise screaming through the air in Cobb County at noon tomorrow: No, a techno performance is not being broadcast for all to hear.

According to the county Facebook page, Cobb is testing its 70 outdoor warning sirens. The noisy buggers will sound their clarion call for three to five minutes.

If the weather is bad, the test will be moved to Thursday.

You can see the locations of the sirens below.

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