Holy Shit!

[AdamGG]

7. The East Wing sits directly over an emergency military command bunker

Directly beneath the East Wing of the White House is the Presidential Emergency Operations Center.

https://en.wikipedia.org/wiki/Presidential_Emergency_Operations_Center

Dump has reportedly collected $300 million from private donors (largely corporate) for the construction of his ballroom. But, no ballroom should cost that much; the price per square foot is orders of magnitude off.

There's a good possibility that the money is being channeled into upgrading Trump's military bunker beneath the ballroom and that it's for the lovely things has has planned for us later on.