On September 14, 2001 (only three days after the World Trade Center attacks), Graham was invited to lead a service at Washington National Cathedral; the service was attended by President George W. Bush and past and present leaders. He also spoke at the memorial service following the Oklahoma City bombing in 1995. On June 24–26, 2005, Graham began what he said would be his last North American crusade, three days at Flushing Meadows–Corona Park in the borough of Queens, New York City. On the weekend of March 11–12, 2006, Graham held the "Festival of Hope" with his son, Franklin Graham. The festival was held in New Orleans, which was recovering from Hurricane Katrina.