On September 12, 2002, a funeral service was conducted at the Memorial Amphitheater for the 184 victims of the terrorist attack on the Pentagon on 9/11. Following the service, a group burial was held in Section 64. A five-sided memorial marks the group burial. It resembles the Pentagon, which is in visible distance, although the five sides are meant to memorialize the five victims whose remains were not recovered. The names of all the victims are listed on the marker in alphabetical order.