that's essentially the same backup plan at the fukushima plant in japan. wolf? >> thanks very much, mary. if you want to know how close you live to a nuclear power plant, they've create ad handy web tool. we used the bureau zip code in washington. it shows the closest nuclear power plant that outlines the ten-mile area where the air may be unsafe if there were an accident and the 50-mile danger zone where water and food may be contaminated if you're interested. cnnmoney.com. living through one major earthquake is bad enough. meet a couple who survived jar pan and two more major earth wakes in the last few months. and retired u.s. army general wesley clark is here in "the situation room." we'll talk about u.s. military options.