It would seem a North American Electrical Grid collapse event is a lot more susceptible to an EMP attack than I have suspected.
https://www.youtube.com/watch?feature=player_detailpage&v=_lZUdGrbIDc#t=2368In fact the whole discussion is very disturbing considering the lack of any resilience of the electrical grid

These folks it would seem appear to know what they are talking about and ARE NOT your typical Telebox Doomsday Preppers some folks like to poke fun at.