Observances are being held all over the United States to mark the 10th anniversary of the day when terrorists hijacked airliners and flew them into the World Trade Center and the Pentagon. Here is a sampling of the coverage.
Crowds are streaming to New York City for the opening of a memorial set up on "hallowed ground" -- pools with cascading waterfalls built in the place of the two missing World Trade Center towers. For more details on the ceremonies, see ABC News.
Since the 9/11 terrorist attacks, Washington has seen both subtle and significant changes to its landscape. See photos and descriptions on The Washington Post.
First responders relive their haunting experiences on their road to recovery and the doctor who is preserving their oral histories. See 60 Minutes on CBS News.
Bells tolled 40 times in Shanksville, PA, in a ceremony in which the names were read of the 40 passengers and crew who died after terrorists hijacked UAL 93. As the world knows, with passengers in rebellion, the plane slammed into a field, killing all aboard. Get the details, on The New York Times.