EMP doesn’t really hit unless you blow off the bomb above the atmosphere. Again the ‘Compton Effect,’ and believe me, I’ve read about it, but don’t have a real grasp on it myself; I need a tech head for that. I just know that the burst above the atmosphere sets off an electro-disturbance, kind of like a magnetic storm, which cascades down into the lower atmosphere like a sheet of lightning and, bango, it fries everything with electronics in it.” “Just one bomb?” Kate asked. He nodded.