Plant chief: Fukushima nuke plant still vulnerable
Japan Nuclear
Damaged Unit 2 reactor building is seen at tsunami-crippled Fukushima Dai-ichi nuclear power station of Tokyo Electric Power Co., 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)