On September 11, 2001, seven DIA employees lost their lives along with 118 other victims at the Pentagon in a terrorist attack when American Airlines Flight 77 piloted by five Al-Qaeda hijackers plowed into the western side of the building, as part of the September 11 attacks. The death of seven employees at once was the largest combined loss in DIA's history. On September 11, 2009, DIA dedicated a memorial to the seven employees lost in the terrorist attacks on the Pentagon. The memorial is located in the garden at the Defense Intelligence Agency Analysis Center in Washington D.C.