Updated September 11, 2021 at 3:34 PM ET
On the 20th anniversary of the Sept. 11 attacks, multiple ceremonies commemorated the nearly 3,000 lives that were lost on that day.
From New York to Pennsylvania to the Pentagon, here are some of the scenes captured as people are remembering and reflecting on the lives lost and legacies left behind.
New York City
In New York City, those honoring those killed gathered Saturday morning in Lower Manhattan at the National Sept. 11 Memorial & Museum. The museum is located on the spot where the twin towers fell.
In Arlington, Va., a ceremony was held at the National 9/11 Pentagon Memorial honoring the 184 people killed when American Airlines Flight 77 crashed into the west side of the Pentagon.
Attendees gathered at the Flight 93 National Memorial in Shanksville, Pa., in a ceremony attended by Vice President Harris, second gentleman Doug Emhoff, and former President George W. Bush.
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Corrected: September 10, 2021 at 9:00 PM PDT
Because of incorrect information from Getty Images, a caption on a previous version of this story misspelled Charlie Greene's last name as Green.