Sonic defense is the responsibility of every citizen. Our nation's acoustic resources could come under attack at any time. Therefore, it is necessary for you -- the citizen -- to be prepared. This recording will provide information you may need in an emergency. In the event of a breach of sonic security, remain calm and play these recordings at maximum volume.
Sonic defense is the responsibility of every citizen. Our nation's acoustic resources could come under attack at any time. Therefore, it is necessary for you -- the citizen -- to be prepared. This recording will provide information you may need in an emergency. In the event of a breach of sonic security, remain calm and play these recordings at maximum volume.