On July 24, the US National Archives released a series of 356 never-before-seen photos, most of them taken on September 11, 2001 inside the emergency bunker under the White House.
The bunker is officially called the Presidential Emergency Operations Center (PEOC), but White House officials also call it the shelter. It was constructed in 1942 underneath the East Wing of the White House, which was primarily built to cover the building of the bunker. It is said the PEOC can withstand the blast overpressure from a nuclear detonation.
The photos were released in response to a Freedom of Information Act (FOIA) request filed by Colette Neirouz Hanna, coordinating producer for the FRONTLINE documentary film team. They focus on the reaction from then-vice president Dick Cheney and other Bush administration officials during the terrorist attacks.