As a prepper and avid reader of post-apocalyptic fiction like One Second After, Alas Babylon, and Going Home, an EMP has long been on my mind as one of the most catastrophic threats we could face. After reading numerous reports from the Congressional EMP Commission, I figured that the reality of such a threat was a given. So when I recently wrote about making Faraday cages, imagine my surprise when I saw this comment: I appreciate the attempt to help people prepare for all kinds of disasters, but I’m going to have to throw a conversational bomb into this room,...