An existential electromagnetic pulse (EMP) threat is posed by a natural event (a massive solar emission that is infrequent but certain to occur—the only question is when) or a manmade event produced by a high altitude nuclear explosion that could be executed by a number of nation states or even terrorists. Recent events suggest a growing appreciation of the seriousness of these threats and possibly the initiation of helpful countermeasures. But will they be in time? Read Full Story