World25 years after 9/11, survivors fear the memory is fading

As the United States marks 25 years since the September 11 attacks, some survivors worry that the event is slipping from living memory. Nearly 3,000 people died after al-Qaeda terrorists hijacked four airliners targeting New York, Washington and Pennsylvania. Orthopedic surgeon Dr. Gordon Huie treated victims, later developed cancer linked to Ground Zero exposure and lost his sister Susan in one of the Twin Towers.