emergency of this type. dr. manny alvarez is with us senior managing editor for fox news health.com. always good to see you. you wake up in the morning, first thing you see ballistic missile headed your way. what do you do? well, listen, as a matter of fact i spoke to a doctor this week who specializes in radiation survival here in new york. we did a segment for fox news health. exactly, you know, my impression as a doctor was like, listen, a nuclear bomb is coming your way, are you going to survive it? and i thought no but in the case he explained to me a couple things happen. so the immediate area of impact, everything gets destroyed. that could be 1 or 2 miles. there s no survival whatsoever there. once you go beyond 3 miles 3shg 1/2 miles 3 1/2 miles, there s tremendous radiation exposure. that s when shelter becomes very important. if you shelter yourself immediately, within 15 and 20 minutes and you are not outside, the fallout, which is the dust and radiation particles that