Akhir 12, 1432 / March 17, 2011, SPA -- A water cannon began dousing an overheating nuclear reactor at Japan's quake-stricken power plant on Thursday, after earlier being forced to withdraw because of high radiation levels, broadcaster NHK said, according to Reuters. The water cannon had been called in to spray the Fukushima Daiichi complex's No.3 reactor, which contains plutonium fuel and has been the top priority for authorities.