[quote=Terminal]
Interested.One query: If one presumes the Lone Wanderer did some inadvisable experimentation with the Death Ray aboard Mothership Zeta prior to the confrontation with Mothership Tau, this happens:Sources elsewhere on the wiki indicate a minimum blast radius of 250 miles - pretty hot stuff, as it were. If that happened there's a definite chance a long segment of the Green Line is simply gone, along with basically everything else in that area.Did or did not the Lone Wanderer push that button? ;)
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Thanks for the interest! For the sake of the RP, we'll assume he did NOT push the button. 

I think for the sake of continuity we're going to assume the protagonists of New Vegas and FO3 made heroic choices, though individual instances (Did the LW put the FEV virus in the water, leaving DC a purified but largely empty waste?) can be discussed by the players, as it is their world to build as much as it is mine =)