FILE - In this March 24, 2011 file aerial photo taken by a small unmanned drone and released by AIR PHOTO SERVICE, damaged Unit 4 of the crippled Fukushima Dai-ichi nuclear power plant is seen in ... more 
FILE - In this March 24, 2011 file aerial photo taken by a small unmanned drone and released by AIR PHOTO SERVICE, damaged Unit 4 of the crippled Fukushima Dai-ichi nuclear power plant is seen in Okumamachi, Fukushima prefecture, northern Japan. Nearly 10 years after Japan's top utility first assured the government that its Fukushima Dai-ichi nuclear power plant was safe from any tsunami, regulators were just getting around to checking out the claim. The move was too little, too late. less 
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Associated Press | Photo By AIR PHOTO SERVICE, File
Sun, May 1, 2011 10:05 AM EDT