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The National Memorial Day Concert is a free annual concert performed on the west lawn of the United States Capitol Building in Washington, D.C., in celebration of Memorial Day since 1989.
The hijackers crashed a third airliner into the Pentagon in Arlington, Virginia, just outside Washington, D.C. The fourth plane crashed into a field near Shanksville in rural Pennsylvania after some of its passengers and flight crew attempted to retake control of the plane, which the hijackers had redirected toward Washington, D.C. in an attempted attack on the United States Capitol Building.