So don't freak out. It's just a test.
"The National Emergency Alert System is an alert and warning system that can be activated by the president if needed to provide information to the American public during emergencies," White House press secretary Jay Carney told a gaggle of reporters Tuesday. The test will only last about 30 seconds and will be broadcast on television and radio stations across the country. "Just wanted to make sure everybody knows that it's just a test," Carney added.
Federal Emergency Management Agency (FEMA) and the Federal Communications Commission (FCC), along with many other agencies are teaming up to help spread the word so people know what to expect and are not caught off guard when the test occurs.