The name of each of the 2,977 persons who died in the 9/11 attack is inscribed in the 9/11 Memorial at Ground Zero. Michael Arad, the architect of this memorial sent a letter to the surviving families asking what would be important to them in the memorial. Here his statement about this: “It took two years to settle on the concept of “meaningful adjacencies,” where names are placed in a way that reflects families, friends, people who commuted to work together every day, or those who went to school together many years ago. Some 1,200 requests came in from the families, and it took another year to arrange the names.
This resulted in nine groups, representing the four flights that were hijacked, the two towers, the Pentagon, the first responders, and the victims of the World Trade Center bombing in 1993. Each group contains smaller groups…”