The Great East Japan Earthquake triggered an unprecedented nuclear disaster at the Fukushima Daiichi Power Plant. Japan's initial response to the crisis created miscommunication issues with the U.S. Our exclusive interviews from both sides take us back to that tense time and reveal Japan's lack of preparedness in a nuclear emergency at that time. As Japan eyes more nuclear power for energy security, the country is facing a difficult question on how to bridge that with lessons learned from the past.