Louder than bombs: LRAD 'sonic cannon' debuts in U.S. at G20 protests

Updated

Pittsburgh police on Thursday used an audio cannon manufactured by American Technology Corporation (ATCO), a San Diego-based company, to disperse protesters outside the G-20 Summit -- the first time its LRAD series device has been used on civilians in the U.S.

An ATC sales representative confirms to DailyFinance that Pittsburgh police used ATC's Long Range Acoustic Device (LRAD). "Yes, we sold one LRAD unit to a government agency -- I don't know which one -- which was used in Pittsburgh," the representative said. American Technology Corp.'s stock was trading up over 15 percent in heavy activity late Friday.

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