O 2 Green News Today : Breaking News, Live Updates & Top Stories | Vimarsana

A new system is pushing technology to help police find an active shooter faster and showing potential victims the best route to escape at the same time.

United statesDan hilsBrian hamrickRichard wallaceAmberly village policeVillage police chief richard wallaceActive shooterAmberly villageHief richard wallaceDan hilsO 2 greenO two greenGreen lightRed lightSchool security