We should trade, because I think if it happened, I would rather live to see what happens after than not. But I spend nearly all my time within a 3 mi radius of NSA headquarters so yeah I'm pretty sure I'm dead by the time anybody realizes it's happening.

One of the thing that tool points out is how limited the radii actually are, though. Especially if you go with airbursts to minimize fallout. I'm used to thinking bombs fall = cities are gone instantly, but you have to really overpower the bombs to get there. (Even within the radii, at Nagasaki and Hiroshima a surprisingly large number of people survived.)