Following the attack on Pearl Harbor in December 1941, President Franklin D. Roosevelt ordered the secret construction of an underground bomb shelter at the White House for national security. The 1942 expansion of the White House by adding the East Wing by Captain Parker's family, the Charles H. Tompkins Construction Company, was specifically designed to conceal and cover the construction of a 1,600 square foot bomb shelter, 20' deep under the new White House East Wing known as the Presidential Emergency Operations Center (PEOC). The PEOC could shelter 100 people, at a cost of $1,005,664.07 paid to the Chas H. Tompkins Company in August 1942 (see a copy of the check).
Following 9/11, President Barack Obama secretly ordered the construction of a bomb shelter, 60' deep under the White House complex that can withstand a nuclear blast and house dozens of people for multiple weeks.
In 2025-2026, President Donald J. Trump ordered the construction of an above grade 90,000 sf ballistic missile proof and drone proof structure (the Ballroom) and a 132,000 sf below grade military complex bomb shelter with medical facilities reaching 6 floors down into the bedrock below the White House's new East Wing. The Senate Judiciary Committee approved $1 billion in 2026 for this military complex, and $400 million was donated by private individuals for the Ballroom décor. The below grade structure can withstand a nuclear blast. Using 16 sf per person and supplies, this combined above and below grade military complex bomb shelter with medical facilities can provide refuge from an attack for almost 14,000 people — and safe refuge for up to 22,000 people if 10 sf per person and supplies is used. Up to 1,000 people can attend a State Dinner in the Ballroom seated around tables, and 10,000 people can attend a community function sitting theater-style and all be protected.