LRAD sound weapons at protests use focused acoustic beams up to 162 decibels that cause permanent hearing damage, but distance and industrial earplugs provide effective protection.

Several police departments across America are planning to try a new device that uses focused sound, turned way up. These so-called non-lethal... Focused Sound 'Laser' for Crowd Control Crowd control ...

Crowd control is a constant challenge to law enforcement -- how to stop potential troublemakers without endangering those who are simply in the wrong place at the wrong time. Rubber bullets can kill, ...