'It's insane': Teacher praises technology that protected students during shooting

A new tool that alerted police about the Apalachee school shooting was rolled out a week before the incident, according to police officials. The technology called Centegix alerts law enforcement after buttons are pressed on an ID and it alerts that there is an active situation at the school. #CNN #News Want to stay up to date on the day’s top stories? Sign up for CNN’s 5 Things newsletter, and we’ll give you the 5 biggest stories you need to know, videos people are watching, and more! Sign up here: https://www.cnn.com/newsletters/5-thi...