fully in to run for president. >> all right. we're already out of town but real quick because i said i want it to ask this question earlier last we spoke. if this is considered late by some people's standards to jump into the race, why is it so many are waiting so late before they make it official? >> reporter: first of all, money. very expensive to run. two, a lot of candidates have already run and they don't need their name i.d. that's what we're seeing, fred. >> mark preston, always good to see you. appreciate that. all right, lessons learned now from past disasters. hiroshima survivor who uses radiation to help save lives as a cancer doctor.