It's the alert that – if it's real – you won't want to get again. For the first time ever Wednesday, Americans nationwide will receive an alert on their cellphones from President Trump. The test, scheduled for 2:18 p.m. ET, is the first test of a national presidential alert system that will let any president issue a warning about a crisis. That could include a missile launched by another country at the U.S. or a tsunami.
"When those messages appear on mobile devices, people should take those extremely seriously," FEMA's Antwane Johnson told CBS News correspondent Anna Werner. "It has some direct impact on either life or safety."
Johnson directs the agency's public alert warning system that will send out the nationwide test of the presidential alert Wednesday. "If we have something that's of national significance, we can rapidly notify the American public of that event," Johnson said.