prevent a meltdown at that plant sent to the hospital after stepping into contaminated water. we re also getting word that the pentagon is preparing to hand out anti-radiation pills to defense workers living within 200 miles of that plant. david meyer streaming live from osaka, japan. david? reporter: hi, jon. yes, it s worth pointing out that u.s. citizens shouldn t take those pills immediately. the u.s. will order them to be taken if situation deteriorates dramatically at that nuclear plant. at the plant the workers are still trying to cool down those reactors. as you said, three men who were working at the plutonium-based nuclear reactor got high radiation today, and they ve been hospitalized. and also at this time they have got some help, now, from australia. a giant remote water cannon has been flown in to try to help douse water more onto those reactors. mean while, the japanese