Speaking of "many types" of EMP, sometime in the 70s I was sitting in a 67 Mustang convertible, in Poquoson, Va....probably somewhere I wasn't supposed to be, listening to music on the radio, when what I think was an A10 Warthog, (maybe from Norfolk Naval Station?) flew in low, almost directly over me and instantly my radio made a pop sound and never worked again! I got out of there fast, (my Mustang engine still started!) but not too fast, because the road I was on had huge potholes, some large enough to swallow a motorcycle or compact car! I never went back there, but I've always wondered if that plane had some microwave or mini EMP device that was designed to knock out enemy communications or radar in advance of other planes? Or was it just coincidence?