Looks like if you reached the correct height, would only take one on the west coast and one on the east coast. Or perhaps one off the west coast and one off the 3rd coast (southern). Imagine Obama coming back from his Far East Crusade to an America crippled by an EMP.
I know for a fact that the US Navy, as a matter of policy, does not let too many missile launch capable boats hover off the west coast.
I read a book “War Day” years back, I recommend it to those who think this was an attack.
I bet the navy is going to come up one tomahawk short at its next audit.
Or the Pentagon is cutting off a new purchase orders to Hughes and GD and GE.