An electromagnetic pulse (EMP) over the United States could end modern life in America overnight. Whether caused by an enemy attack (a nuclear device detonated above the atmosphere) or by a natural phenomenon (a geomagnetic storm), an EMP can cause entire regions of the country to lose electricity permanently. Despite the EMP Commission’s recommendations in 2004 and 2008, hardly any progress has been made in protecting the country from an EMP attack and its catastrophic results. The U.S. must prepare to deal with an EMP now.