REACT Systems, Inc., of Los Altos, California, has announced the commercial availability of REACT! Enterprise, which delivers targeted verifiable communications to first responders and those at risk. The fully scalable enterprise solution can reach millions of users within seconds, and its open architecture enables interoperable automated communication with other systems. Notifications and alerts can be launched from desktops, mobile devices, or smart phones. They can also be triggered automatically through integration with security and other systems. Alerts can be continually updated to increase situational awareness, speed response times, and optimize resources. Additionally, users can receive multiple alerts simultaneously. Communications include rich audio/video, SMS text, and voice alerts.