Wearing protective suits and masks, US Ambassador to Japan Caroline Kennedy (C) and her son Jack Kennedy Schlossberg (R) listen to Masuda Naohiro (L), an executive of Japan's Tokyo Electric Power Co. (TEPCO) as they visit the central control room for the unit one and unit two reactors of the tsunami-crippled Fukushima Dai-ichi nuclear plant in Okuma town in Fukushima prefecture on May 14, 2014.  Kennedy toured the crippled Fukushima nuclear power plant for the first time on May 14, pledging continued US help with the clean-up.       AFP PHOTO/POOL/Toru YAMANAKA        (Photo credit should read TORU YAMANAKA/AFP via Getty Images)