completely destroyed . we have seen the araeil shots . trying to figure out what to do next to prevent a complete meltdown there. brian: when tempco was fulling pulling out the prime minister demanded what was going on and demanded they go back. steve: we ll go to ykoto air force base. david piper is standing by. reporter: the new crisis piraling oust control. in a desperate move japanese military helicopter was sent up with a huge bucket of water to dump it on the fukushima plant. they had to abort the operation because of the radiation too high . tv pictures showed moke or steam rising from the facility today. authorities have sprent days trying to prevent the water . reactors from evaporating. there are explosions in the plant since it was damaged in last friday s magic quake. it was not realistic to think that this is the start of a nuclear physicists chain reaction. they are looking for more u.s. military help to contain the fires. prime minister naoto kan urged