White House Ballroom plans are revealed during media briefings

Kennedy envisioned a Deep Underground Command Center (DUCC), with the new White House Ballroom, things are moving in that direction, just not as deep.

President Kennedy envisioned a DUCC under the White House.

As the name implies the, complex was intended to be really deep under the White House:

DUCC Proposed Depth: Located roughly 3,500 to 4,000 feet beneath the bedrock in the Washington area.

• Design: Intended as a self-contained capsule suspended on shock absorbers to absorb massive seismic shocks or…