chief medical officer with the american cancer society. thank you for being here. i have so many questions for you. a lot of like really strange questions people have about radiation and i'm going to start with those so that you can like demystify. >> sure. >> we see people getting on to planes in japan and we fear that those people will bring radiation back to the united states on their clothes and on their person. is that possible? >> it is possible for them to bring it on their clothes, yes. however, those people are being screened before they get on the airplane and federal authorities, federal immigration in the united states has been wonderful in looking for radiation for the last ten years and people coming into the country. i've actually had patients that nuclear medicine bone scans and stress tests who actually have been detained by immigration officials because they set off the monitors at airports. i'm not worried that someone is going to get through immigration and into the united states with radiation on their clothing. >> we should not worry about