On September 12, 2002, Secretary of Defense Donald Rumsfeld presided over a funeral with full military honors at the Arlington National Cemetery Memorial Amphitheater. The single casket draped with an American flag contained identified and unidentified remains of military and civilian personnel who died during the 9/11 attack on the Pentagon. The remains represented the 184 individuals who were killed in the Department of Defense building and on American Airlines Flight 77. The 64 Pentagon victims also have individual burial sites at the cemetery. This was the first memorial service of its kind since the interment of the Vietnam War’s Unknown Soldier in 1984. The burial took place the following day, adapting the traditional service for an unknown soldier.
The Pentagon Group Burial marker is also known as the September 11th Memorial. The five-sided marker, representing the Pentagon, has aluminum plaques that list the names of those who were killed when the hijacked plane struck the building. Symbols identify those who were aboard the aircraft and individuals whose remains were either not recovered or identified. The Vermont granite marker is four and a half feet tall and sits atop the group burial site containing the casket with cremated remains. An inscription along the top edge of the marker in relief letters identifies the group as victims of the September 11, 2001 attack on the Pentagon.