I just finished reading the book, "One Second After". Very graphic, very brutal, very hard to put down. Plausible story about what might happen to this country after an EMP (ElectoMagnetic Pulse) attack occurs over the U.S. Imagine everything you use that requires electronics - not just electricity (though that is included) , but most cars, phones, even water supplies. Scary good read - if you like books that give you goosebumps - I recommend it.
Everyone have a great day!