Crowd Device News Today

Preemptively try to get ahold of this before the crowd shows up. i know theres been a challenge to a controversial crowd device they wanted to use. what happened there? >> reporter: that is the lrad, long range acoustic device or sound canon. it can be used as a public address system or sound canon producing ear-splitting levels of sound. the court has just ruled because it had the ability to produce long-term hearing damage, the judge has just ruled that the police can use this device as a publ...