Plant chief: Fukushima nuke plant still vulnerable
Japan Nuclear
A journalist is assisted by Tokyo Electric Power Co. worker to wear a full-face mask before the press tour to damaged reactor buildings by bus, at the emergency operation center of TEPCO's tsunami-crippled Fukushima Dai-ichi nuclear power station in Okuma, Fukushima prefecture, northeastern Japan, Tuesday, Feb. 28, 2012. Japan next month marks one year since the March 11 tsunami and earthquake, which triggered the worst nuclear accident since Chernobyl in 1986. (AP Photo/Kimimasa Mayama, Pool)