"There’s a ‘top-secret’ project beneath the White House East Wing. CNN has the details on what’s inside – and what’s coming | "CNN Politics

https://archive.is/e4wzc 

White House East Wing is being rebuilt, replacing the old PEOC bunker with a modern, top-secret underground facility. Meant to handle nuclear, chemical, biological & EMP threats, while Trump's new ballroom goes above. Subterranean work funded by taxpayers.