Live updates: Flight 93 National Memorial marks 20 years since Sept. 11 terrorist attacks

When Flight 93 crashed in a field outside Shanksville on Sept. 11, 2001, it killed dozens of people. Yet the familiar call of "Let's roll," and the actions of the passengers to prevent more deaths, is a legend of American heroism.

Follow along here as we cover all the news from the ceremony at the Flight 93 National Memorial. 

Lifelong bonds: How the Flight 93 families and county residents united

For subscribers: Military families reflect 20 years after 9/11 changed their worlds

Remarks from Vice President Harris

Updated at 11:15 a.m.

Vice President Kamala Harris spoke of the hard times the families of those on Flight 93 have faced, and how they must remember their faces on every birthday and every time they tuck in their kids. 

"You have felt it every day, every week and every year that has passed, these 20 years," she said. "Please know your nation sees with you, and we stand with you."

Harris said when she first learned about Flight 93, it told her about the courage and resilience of the American people. 

"In a matter of minutes, in the most dire of circumstances, the 40 responded as one. They fought for their own lives and to save the lives of countless others at our nation's capital," she said.

Harris also talked about the future. 

"We must challenge ourselves to look back, to remember, for the sake of our children, for the sake of their children. And for that reason we must also look forward. In the end, I do believe that is what the 40 were fighting for." 

Ringing of the bells

Updated at 11:09 a.m.

Before the speakers addressed the audience, the name of those aboard Flight 93 were read by their loved ones, named as fathers, mothers, brothers, sisters and others. 

Each name was accompanied by tolls of the Bells of Remembrance. 

Remembering the heroes

Updated at 11:03 a.m.

Gordon Felt, president of the Families of Flight 93 organization, lost his brother, Edward, when Flight 93 crashed on Sept. 11. Felt said he still grieves 20 years later, but encouraged those grieving to have courage. 

"We can never move on," he said, "but we must continue to move forward."

Former President Bush addresses those gathered

Updated at 10:58 a.m.

Former President George W. Bush, in office during the terrorist attacks on Sept. 11, 2001, took to the stage Saturday to reflect. He talked about the fear of the days after the attack, and the courage. 

"Today we remember your loss, share your sorrow, and we honor the men and women that you have loved so long and so well," Bush said to those assembled.

The president also praised the response of Americans in the days that followed.  

"We learned that bravery is more common than we imagined."

Ceremony opens at the memorial

Updated 10:12 a.m.

Flight 93 National Memorial Superintendent Stephen Clark opened the ceremony. 

“(Twenty) years ago today when the United States was attacked, numerous heroes emerged,” he said of the passengers and crew of Flight 93. “For 20 years they have been remembered as examples of the best of humanity.”

President Biden to visit Flight 93 National Memorial

U.S. President Joe Biden and first lady Jill Biden are expected to visit the Flight 93 National Memorial this afternoon, according to ABC News. The president is to attend a wreath-laying there at approximately 12:30 p.m.

Biden started his day by attending a ceremony in lower Manhattan at the site of the World Trade Center attacks, and was scheduled to visit the Pentagon later in the afternoon. 

The White House released a taped statement from the president Friday in which he praised the unity and heroism that Americans showed after the attacks. 

Watch memorial ceremony live

The Flight 93 National Memorial is holding a ceremony today to mark the 20th anniversary of the Sept. 11 attacks that killed more than 3,000 people, especially those aboard the plane that crashed where the memorial now stands. 

Because of COVID, this year's ceremony is closed to the public. The event, which is to include such guests as former U.S. President George W. Bush and Vice President Kamala Harris, will be streamed live at 9:45 a.m. on the memorial's Facebook page.