Unfortunately the next step is World War III which lasts from 2026 to 2053. It almost kills all of humanity and very nearly leaves the planet uninhabitable.
We're on our way there and I think we'll almost kill all of humanity and leave the planet uninhabitable ... but I don't think we'll have any Vulcans or any other space alien landing any time soon to save us all from ourselves.
My state of the art bunkers can be found in any random pile of trash.
The patent pending, all natural and sustainable Bunker Box(tm), is available in sizes from infant to adult. The sturdy design may keep radioactive fallout from falling on your skin, and the thick material blocks some of the intense heat of the blast.