charlotte , nc 28269 december 14 , 2010 pastor john hagee founder and senior pastor cornerstone church 239 n loop 1604 w san antonio , tx 78232 dear pastor hagee , many thanks for your kind letter of nov. 30 john , the other part of your book , which has been keeping me up nights , is on page17 where you write : intelligence experts believe iran has developed the technology to unleash an electromagnetic pulse ( emp ) designed to be used against america in a time of war .