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LEAKS CIVIL DEFENSE PUBLIC ACTION SIGNALS
Sirens, whistles, horns, Or other similar devices will warn you in case enemy attack is threatened. Memoriae your local signals so you will know what to do instinctively.
The ALERT SIGNAL, which means attack is probable, is a steady blast of three to five minutes’ duration..
When you hear this, it indicates Conelrad (640 or 1240). Follow civil defense directions promptly. The alert signal will mean evacuation or mobilization of civil defense forces, depending on your location.
The TAKE COVER SIGNAL is a wailing tone, or a series of short blasts, of three minutes’ duration.
When you haer this, it indicates that attack is imminent and you must take the best available shelter. Stay in the shelter until civil defense authorities tell you it is safe to come out.
If in doubt, switch your radio to the emergency frequencies (640 or 1240)—FAST.
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