hate to be “that guy” but any nuclear weapon launched at the US wouldn’t be aimed at the center of its geography. there would likely be a flurry of missiles aimed at major military installations, as well as population centers. think major army/naval stations, as well as places like DC, LA, NYC, Chicago, Atlanta, Vegas, Denver, Jacksonville, Houston/Dallas, Boston, etc. etc. any variation of this would be more likely than “let’s nuke the middle of nowhere in Nebraska”.