Today was the day for the US government’s big emergency alert drill, which sent a test message to every TV, radio and cell phone in the nation. Starting at approximately 2:20 pm ET on Wednesday, the ...

PHILADELPHIA (WPVI) -- For many in the Philadelphia area, we were awoken Monday morning not by the pleasant sunrise or relaxing music on the alarm clock, but by a blaring tone emanating from our cell ...

An emergency alert test message from South Pasadena was accidentally sent to an estimated 10 million mobile phones across Los Angeles County Tuesday night. Just before 6 p.m., cell phone screens ...

More than 200 million US mobile phones have received a test "Presidential Alert" notification. The trial is designed to check that a previously unused emergency communications system works properly.