In extreme cases, sonic weapons can cause nausea, dizziness, and even permanent damage. In this case, officials used it to ...

Sound weapons deployed at protests have people searching for protection, but understanding LRAD technology reveals the mechanics behind these controversial crowd control tools and practical protection ...

Minnesota State Patrol troopers used a powerful sound system first used by the military in Maple Grove, Minnesota, to communicate and disperse noisy protesters.

Last week, during protests against operations by the US Immigration and Customs Enforcement (ICE) in Minnesota, vehicles with rectangular structures were spotted – some were military Humvees, others ...