Newly released images show former President George Bush and his senior staff in the Emergency Operations Centre in Washington following the attacks on the Twin Towers and Pentagon in 2001.
The staff, including the former Secretary of State Colin Powell, National Security Advisor Condoleezza Rice, and vice-President Dick Cheney, are shown in the secure basement.
The Emergency Operations Centre is a bunker under the east wing of the White House which was built to withstand a nuclear attack.
Vice-President Cheney was in command when the four hijacked passenger planes crashed in New York, Virginia and Pennsylvania, killing 2,996 people.
President Bush was visiting a school in Florida at the time at the time of the attacks before being flown back to the White House.
Frontline filmmaker Colette Neirouz Hanna requested that the photos, taken by vice-President Cheney's photographer, be released by the National Archives under the Freedom of Information Act.
To see the full set, visit the National Archives' Flickr page.