The Emergency Alert System is a national public warning system that requires TV and radio broadcasters, cable television systems,
wireless cable systems, satellite digital audio radio service providers, direct broadcast satellite service providers and wireline video service providers
to offer to the President the communications capability to address the American public during a national emergency.
The system also may be used by state and local authorities to deliver important emergency information such as AMBER (missing children) alerts
and emergency weather information targeted to a specific area.
Yes, the ole Emergency Broadcast System.
Because it worked so well during 911.