Massive emergency alert test scheduled to hit your phone on Wednesday. Here's what to know.
www.usatoday.com
Your phone could belt out a terrifying emergency alert sound. Here's when it's going to happen and why we can't play the sound for you.

"Get ready to not freak out. On Wednesday, October 4 at 2:20 p.m. ET, every TV, radio and cellphone in the United States should blare out the distinctive, jarring electronic warning tone of an emergency alert."