Plant chief: Fukushima nuke plant still vulnerable

A policeman checks vehicles at a checkpoint near the J-Village, a soccer training complex now serving as an operation base for those battling Japan's nuclear disaster at the stricken Tokyo Electric Power Co Fukushima Dai-ichi nuclear power plant, in Hirono town, Fukushima prefecture, northern Japan Tuesday, Feb. 28, 2012. White smokes raise from TEPCO's thermal power plant. Nearly a year after it suffered multiple meltdowns, the tsunami-hit Japanese nuclear plant is in shambles, barely running on a patchwork of makeshift equipment. (AP Photo/Yoshikazu Tsuno, Pool)