Think back to a time before public address systems. You have an event that needs an announcer – an auction, sporting event, or rodeo. What you need is someone with a very loud voice – loud enough to ...

A new, loud noise blared in ocean beach during the dense fog. 10News reveals why some residents didn't recognize the sound. "It was all day every day," said Kara Roach. It went off, almost non-stop.