In this Sept. 11, 2013 photo, a couple pray in front of a memorial in Namie town, Fukushima prefecture, northeastern Japan, a restricted area where former residents have been unable to live since

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In this Sept. 11, 2013 photo, a couple pray in front of a memorial in Namie town, Fukushima prefecture, northeastern Japan, a restricted area where former residents have been unable to live since they fled from radioactive contamination from the Fukushima Dai-ichi nuclear power plant, to mark two and a half years from the March 2011 earthquake and tsunami. Radiation cleanup in some of the most contaminated towns around Fukushima's nuclear power plant is behind schedule, so some residents will have to wait a few more years before returning, Japanese officials said Monday, Oct. 21, 2013. (AP Photo/Kyodo News) JAPAN OUT, MANDATORY CREDIT less 

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Associated Press
Mon, Oct 21, 2013 4:13 PM EDT