A fire truck sprays water at No. 3 reactor of the Fukushima Daiichi nuclear power plant in Tomioka, Fukushima prefecture in this still image taken from a video by the Self Defense Force Nuclear Biological Chemical Weapon Defense Unit on March 18, 2011. Engineers have successfully attached a power cable to the outside of the damaged nuclear plant in a first step to help cool reactors and stop the spread of radiation after a massive earthquake and tsunami devastated northeast Japan. (REUTERS/Japan Self Defense Force Nuclear Biological Chemical Weapon Defense Unit)