EMP Threat-The Conspiracy Show: Threat of EMP

What is an EMP? How does it happen? How likely is it to occur? And what would happen if the American electrical grid went down? We explore these questions with F. Michael Maloof, a former senior security policy analyst in the office of the secretary of defense. He is the author of A Nation Foresaken: EMP: The Escalating Threat of an American Catastrophe.