The audience on the Pentagon River Parade Field wave their flags as the choir sings "God Bless America" during a memorial service at the Pentagon on Oct. 11, 2001, in honor of those who perished in the terrorist attack on the building one month earlier. President George W. Bush, Rumsfeld and Chairman of the Joint Chiefs of Staff Gen. Richard B. Myers, U.S. Air Force, eulogized the 184 persons killed when a terrorist hijacked airliner was purposely crashed into the southwest face of the building on Sept. 11, 2001.