that? >> a good five days. no question the winds are going to blow offshore for three days in japan. but i'm a little bit concerned say five days from now, a little particle does come off. later in the period, not right now, but say thursday. this piece could be picked up and sent into the central part of the pacific ocean and that would be a shorter trip to the u.s. now, remember, the radiation from chernobyl went around the world many, many times and we still here in america, even though it went over us a number of times, had less than 1/10th of a chest x-ray from that big disaster. >> we'll continue to check in with you. i want to bring in dr. sanjay gupta. and in new york, i want to bring in professor david brennard. professor, thank you for being on the program. as you watch this, what are the