Anti-Radiation Dome

The anti-black rain dome costs US$500,000,000 dollars to create a city-wide dome made out of silicon to protect every spared cities from nuclear fallout (taken in forms of either black rain or pink snow) in case of when the Last Day comes.

They come with an advanced air filteration system, a simulated weather system, and even extremely advanced technology designed to reclaim areas by expanding itself slowly and protect wildlife within this place, and most of all, it's designed to withstand EMP, a blinding flash, a nuclear blast, hurricane-wind speeds, high pressure, an extreme firestorm, black rain or pink snow, a nuclear winter, and even extremely harmful UV rays after the ozone layer was all but depleted.

Anti-black rain domes are also designed to withstand many other different types of superweapons as well.

Most of spared cities would be defended by this technology,even Nagasaki and Hiroshima