they are still hoping that they can make some progress with the sea water trops. japanese officials flying chops over top of the radioactive plant at the daiichi plant, hoping that they can stop this unfolding nuclear disaster as radioactive plume makes its way now across the pacific toward the united states but how big of a threat will it pose once it gets here? we have some answers on this american morning. good morning to you. glad you re with us on this thursday. march 17th, it s st. patrick s day. i m kiran chetry. i m christine romans. time to get you caught up what is going on in japan. right now, radiation spewing from the crippled daiichi power station this as an agency at the united nations says winds could bring the radiation to the united states by tomorrow.