from emp, cyber, from all the threats we've been talking about. the chief problem is nobody is in charge of protecting the critical infrastructures. we've never thought about that. mark: what would we do for 2 or $3 billion? >> we would install farraday cages and blocking devices, you can put a surge arrester on the transformer. just like you have it on your computer to protect it from lightning, it will protect against lightning, nuclear emp, emp from the sun. had we done so, it could protect you against all of the worst-case scenarios, not just nuclear emp and cyber, but severe weather like hurricanes. millions of people or hundreds of thousands of people who are made homeless for months by hurricane sandy would have been able to go home earlier if the electric grid had been hardened against nuclear emp because it would have been able to survive the overvoltages that happened during hurricane sandy as a result of high power lines