The Phoenix Project was the name given to the project to repair the damage to the Pentagon caused when American Airlines Flight 77 crashed into the building during the September 11 , 2001 attacks . The project 's goal was to reoccupy the outermost ring of the rebuilt section by September 11 , 2002 . This goal was bettered by nearly a month , with tenants moving back in on August 15 , 2002
American Airlines Flight 77
American Airlines Flight 77
Pentagon Renovation Program