SEATTLE — It’s being touted as a non-lethal crowd control tool by the Seattle Police Department, but Long Range Acoustic Devices, also known as LRADs, are now coming under scrutiny locally and other ...

This story was updated at 9:41 a.m. ET on Aug. 18. Violent protests have ravaged Ferguson, Missouri since Aug. 9, after a police officer shot and killed an unarmed 18-year-old who is believed to have ...

What is LRAD? This is what the police 'sound cannon' does Rochester police used a Long Range Acoustic Device (LRAD) at a protest on Sept. 13, 2020. The devices emit loud high-pitched noises intended ...