Why?

The purpose of the Oct. 4 test is to ensure that the systems continue to be effective means of warning the public about emergencies, particularly those on the national level.

Impact

The test will be on all cell phones, radios, and televisions. 

Benefits

To ensure the national emergency alert system is working correctly.

Action Needed

Anticipate all cell phones in your area to produce their emergency alert sound around 2:20pm ET.