The State of the Helicopter Water Drops over Nuclear Site

Not good. FT with the details:

Japanese military helicopters have dropped water on two reactors a total of 4 times so far, but the distance from the reactors and inability to hover over the reactors due to the high level of radiation make the efforts less effective, an NHK expert said. The depth of the spent fuel pools mean at this rate this exercise would have to be repeated 100 times to cool it, he said.