alarmed. the text says this was just a test. what would happen if this happened on saturday. people are freaking out. stop freaking out. it s okay. we re going to go live to san francisco because the epa are sending up radiation monitors. we ll check in at one of those places to be overly cautious here. chad meyers, my thanks to you. now i want to take you straight to japan. keep two things in mind here. first the spiking radiation levels at that stricken power plant. we ve been talking about that now for days. we re still talking about that. number two, a focus on reactor number 3. they are desperately trying to douse that thing with water. you can see the picture right there. also, and this could be crucial here, they are trying to re-establish power to the plant s cooling system. remember it failed as a result of the tsunami here on that is c cnn s dan grant. throughout the night efforts have been under way to establish an external source of power. officials saying they re try