 Ten years ago, a cascade of events halfway around the world led to stronger regulations and enhanced safety measures for nuclear facilities here in the United States. Within a few days of the accident at the Fukushima Daiichi Nuclear Power Station, the Nuclear Regulatory Commission sent experts to the U.S. Embassy in Japan to help resolve the nuclear crisis, assistance that eventually spanned years. In weeks, the NRC began reviewing U.S. nuclear plant preparedness for severe natural events, and it established a Lessons Learned Task Force to review the accident. Within months, the NRC had prioritized task force recommendations and issued orders to licensees to develop mitigation strategies that would maintain key safety functions, upgrade containment venting systems to keep radioactive material inside the plant, and install separate fuel-pool instrumentation to monitor water levels. The NRC also asked licensees to reconfirm their analyses of the risk posed to their plants from flooding and earthquake hazards. Later, the NRC ensured new reactor licenses incorporated Lessons Learned from Fukushima, and it revised its regulations to apply mitigation strategies to all current and future reactors. Today, the operations at every U.S. nuclear power plant incorporate the lessons of Fukushima. The nuclear industry also established two sites that the NRC regularly inspects. They contain stores of additional safety equipment that can be quickly moved in response to simultaneous events at multiple plants. Every operating plant has completed its flooding and earthquake reanalysis, and the NRC continues to inspect them for issues related to post-Fukushima actions. Out of the tragedy and chaos of March 11th came positive actions for a more prepared agency and industry.