There is a company making real life Vaults out in the Mojave desert. Their site is www.terravivos.com I thought this was really interesting, especially since they are near (New) Vegas. It says they are $50,000 for advlts, $25,000 for kids, pets are free. The "Vaults" are supposed to withstand nuclear and biological weapons, meteor strikes, worldwide tsuanmis, magnetic pole shifts, sun flares, and other things. Construction is scheduled to be completed by Dec. 21, 2012. Apparently, after they are built you can come and go at any time if you think there is a need. Too bad I don't have spare 50 Grand sitting around... (also my old account got screwed up and i cant sign in so i made a new account. thats why this is my first post)