Most Americans whether members of the public or politicians in Congress ignore or are unaware of the very real threat of an electromagnetic pulse (EMP) attack. A nuclear device detonated high in the atmosphere above the American mainland can easily disable the country’s electrical grid shutting down nearly all communications, transportation, and service systems. Overnight, daily life as Americans know it will be a thing of the past. There are ways to prevent devastation from an EMP and the U.S. must invest in them now before it is too late. Two of the country’s preeminent national security experts explain how to prevent the worst.