In this Tuesday, Sept. 11, 2001 file photo, the remains of the World Trade Center stand amid other debris following the terrorist attack on the buildings in New York.Â
SHANKSVILLE, Pa. (AP) â Across the vast field where the plane fell out of the sky so many years ago, all is quiet.
The hills around Shanksville seem to swallow sound. The plateau that Americans by the millions ascend to visit the Flight 93 National Memorial, to think of those who died in this southwestern Pennsylvania expanse, sits just above much of the landscape, creating a pocket of quiet precisely where quiet needs to be.
It is a place that encourages the act of remembering.
Keep scrolling to the end of this story for a photo gallery of 9/11 tributes through the years
Twenty years have passed since United Flight 93 made its final descent, chaos unfolding aboard as buildings burned 300 miles to the east. Nearly one-fifth of the country is too young to remember firsthand the day that changed everything.
At the edge of the memorial's overlook, a burly man in a leather Harley Davidson vest talks to two companions. He points toward the patch where the plane hit. It is an intimate conversation, and it is hard to hear what he's saying.
But his first two words are clear:
"I remember âĻ"
Visitors look from the observation platform at the visitors center at the Flight 93 National Memorial, Saturday, May 8, 2021, in Shanksville, Pa.
***
Remembering is not merely a state of mind. As those who beseech us to never forget the Holocaust have long insisted, it is an act. And when loss and trauma are visited upon human beings, the act of remembering takes many forms.
Remembering is political. Those who disagree about the fate of Confederate statues across the American South demonstrate that, as do those who dispute how much the war on terror and its toll should be part of discussions about 9/11 memories.
Remembering wears many coats. It arrives in ground zero ceremonies and moments of silence and prayers upon prayers, both public and private. It shows itself in folk memorials like those erected at the sides of lonely roads to mark the sites of traffic deaths. It is embedded in the names of places, like the road that leads to the Flight 93 memorial â the Lincoln Highway. It surfaces in the retrieval of "flashbulb memories" â those where-were-you-when-this-happened moments that stick with us, sometimes accurately, sometimes not.
There are personal memories and cultural memories and political memories, and the line between them often blurs.
And for generations, remembering has been presented to us in monuments and memorials like Shanksville's, negotiated and constructed and fine-tuned to evoke and provoke the memories and emotions of people and moments in certain ways.
The view from the observation deck at the visitors center of the Flight 93 National Memorial at the end of the path that follows the flight of Flight 93 shows the field where the victims perished when their jet crashed there in the 2001 terrorist attacks, Saturday, May 8, 2021, in Shanksville, Pa.Â
"Monuments are history made visible. They are shrines that celebrate the ideals, achievements and heroes that existed in one moment in time," architectural historian Judith Dupre writes in her 2007 book about them â a book she first pitched to her publisher on, of all dates, Sept. 10, 2001.
Yet while monuments stand, remembering itself evolves. How 9/11 is remembered depends on when 9/11 is remembered. Remembering it on Sept. 15, 2001, or on Sept. 11, 2004 is different from remembering it on Sept 11, 2011 â or, for that matter, different from what it will be next weekend.
What, then, does remembering come to mean on a 20th anniversary, or at any juncture when an event like 9/11 starts to recede into the past â starts to become history â even as its echoes are still shaking the foundations of everything?
"Our present influences how we remember the past â sometimes in ways that are known and sometimes in ways that we don't realize," says Jennifer Talarico, a psychology professor at Lafayette College in Pennsylvania who studies how people form personal memories of public events.
Evidence of that is obvious in the events of the past five weeks in Afghanistan, where a 20-year war waged in direct response to 9/11 ended pretty much where it began: with the repressive and violent Taliban in charge once more.
"If we were still in Afghanistan and things were stable, we would be remembering 9/11 in probably a very different way than how we will remember it this year," says Richard Cooper, a vice president at the nonprofit Space Foundation who worked for the Department of Homeland Security for several years after the attacks and has watched many remembrances over the years.
"That heartbreak and pain we felt on the morning of Sept. 12, 2001, is resurrecting itself," Cooper says, "and that impacts how we remember it today."
***
Visitors look over one of the exhibits at the visitors center of the Flight 93 National Memorial, Saturday, May 8, 2021, in Shanksville, Pa.Â
Even within more static forms of memory, such as the Flight 93 National Memorial, the question of how remembering changes and evolves hangs over so much.
In the visitors' center, visceral, painful artifacts of the moment still bring back the past with astonishing efficiency; twisted, scarred cutlery from in-flight meals is a particularly breathtaking sight. But the variety of remembering that is presented yards away at the quiet overlook and its thoughtful memorial feels more permanent, more eternal â and now, 20 years on, more befitting of something that happened a generation ago.
Paul Murdoch of Los Angeles, the lead architect on the memorial, says it was carefully calibrated to resonate across multiple stages of memory about the event and its implications.
"You can imagine a memorial approach that sort of freezes anger in time, or freezes fear. And that can be a very expressionistic piece of art. But I feel like for something to endure over a long period of time, I think it has to operate a different way," says Murdoch, who co-designed the memorial with his wife, Milena.
"Now we have a generation of people who weren't even alive on 9/11," Murdoch says. "So how do you talk to people of this new generation â or of future generations?"
That question is particularly potent on this 20th anniversary. Society tends to mark generations in two-decade packages, so there's an entire one that has been born and come of age since the attacks. That hardly means they haven't been paying attention, though: They "remember" too, even if they weren't around.
Krystine Batcho, a psychology professor at Le Moyne College in Syracuse, New York, studies how nostalgia works. She found something interesting a couple years ago when she was researching how young people encountered stories that resonated with them â both personally and through the news.
Even those who lacked living memories of 9/11, Batcho says, responded with stories about the event. It was remembering as shared experience.
And no wonder. So many first encounters with 9/11 on the day it happened were, in the tradition of an information age, both separate and communal. People in different parts of the country and world, under vastly different circumstances, watched the same live camera angles on the same few feeds and saw the same, now-indelible views of the destruction in the same way. They experienced it apart, but together.
That formed a communal memory of sorts, even if sometimes people who saw the same things didn't remember them the same way â a specific camera angle or vantage point, a key figure's comments, the exact sequence of events. Remembering can be like that, experts like Talarico say, particularly with intense flashbulb memories like 9/11 that carve deep grooves but aren't necessarily accurate in the details.
"We reconstruct the event through our own lens, and part of that lens is very social," Batcho says. "You would think that the memories would be more cohesive and homogeneous. It turns out that it's much more complicated than that."
***
President Barack Obama bows his head for a moment of silence before delivering remarks at the Sept. 11 memorial observance ceremony at the Pentagon, Sunday, Sept. 11, 2016.Â
May 31, 2002, less than a year afterward. former New York Mayor Rudy Giuliani tells high school students in Shanksville at their commencement: "A hundred years from now, people are going to come and want to see it. And they are going to want to know what happened."
Sept. 11, 2016, the 15th anniversary. President Barack Obama says: "Fifteen years may seem like a long time. But for the families who lost a piece of their heart that day, I imagine it can seem like just yesterday."
That fundamental tension â it feels like yesterday, yes, but it is also becoming part of history for the long haul â is what confronts us in the coming days as many revisit and consider 9/11 and commit their own acts of remembering.
For those who were not at the nucleus of 9/11's horror and its pain but experienced it as part of the culture in which they live, it can somehow manage to feel like both yesterday and a long time ago all at once. And as with so many acts of remembering, it is still being debated and contested â and will be for a long time to come.
"Sober ceremonies should not mislead us into thinking the public remembrance of this horrific event is a settled matter," 9/11 historian John Bodnar wrote in a Washington Post opinion piece in May.
At a hinge point like a major anniversary, particularly with something as tectonic as 9/11, it's easy to fall back on an aphorism like this one from William Faulkner: "The past is never dead. It's not even past." But the saying has endured for a reason.
Memory becomes history. And history â shared history â is held onto tightly, sometimes rabidly. It's why so many people grasp tightly to comforting, nostalgic historical narratives â even when they're shown to have been as destructive as they were productive.
The act of remembering something like 9/11 involves exactly that delicate balance. When memory does become history, it can become more remote, like a Revolutionary War memorial for people whose passions and sacrifices have been sanded down by time. With distance, it can calcify.
That's not going to happen with 9/11 for a long time, of course. Its politics are still roiling. The arguments that it produced â and the ways they sent society hurtling in a different direction â are just as intense as in those early days.
And when a nation pauses to remember the morning 20 years ago when it was attacked, it is not only looking over its shoulder. It is also looking around and wondering: What does this mean to us now?
"What is important in making a memorial, in what you remember and in how you remember it?" J. William Thompson wondered in his elegant 2017 book, "From Memory to Memorial: Shanksville, America and Flight 93."
Any answers to that are, understandably, complex. But behind all the formal words and ways to commemorate a day that upended the world, something more fundamental lurks: a simple imperative to hold onto a sense of what changed things, and how.
On the cover of Thompson's book, a man stands looking at the Shanksville crash site, his right arm raised. In his left he holds a hand-painted sign etched with four words, one declarative sentence: "I did not forget."
***
PHOTO ARCHIVE
Photos: 9/11 tributes through the years
Tribute in Light, two vertical columns of light representing the fallen towers of the World Trade Center shine against the lower Manhattan skyline on the 19th anniversary of the September 11, 2001 terror attacks, seen from Jersey City, N.J., Friday, Sept. 11, 2020. (AP Photo/Stefan Jeremiah))
A U.S. flag is unfurled at sunrise at the Pentagon on the 17th anniversary of the September 11th attacks, Tuesday, Sept. 11, 2018. (AP Photo/Pablo Martinez Monsivais)
This is a flag left at the Flight 93 National Memorial in Shanksville, Pa, Friday, Sept. 11, 2015, as the nation marks the 14th anniversary of the Sept. 11 attacks. (AP Photo/Gene J. Puskar)
Soldiers with the U.S. Army's 25th Infantry Division, 3rd Brigade Combat Team, 2nd Battalion 27th Infantry Regiment based in Schofield Barracks, Hawaii, hold a ceremony commemorating the tenth anniversary of the 9/11 attacks and soldiers the unit has lost since then in the wars in Iraq and Afghanistan Sunday, Sept. 11, 2011 at Forward Operating Base Bostick in Kunar province, Afghanistan. (AP Photo/David Goldman)
A woman places flowers in the inscribed names along the edge of the North Pool during memorial observances on the 13th anniversary of the Sept. 11, 2001 terror attacks on the World Trade Center in New York, Thursday, Sept. 11, 2014. (AP Photo/Justin Lane, Pool)
Mourners hug beside the names of the deceased Jesus Sanchez and Marianne MacFarlane at the National September 11 Memorial and Museum, Friday, Sept. 11, 2020, in New York. Americans commemorated 9/11 with tributes that have been altered by coronavirus precautions and woven into the presidential campaign. (AP Photo/John Minchillo)
Firefighters salute in front of FDNY Ladder 10 Engine 10 near the 9/11 Memorial on Friday, Sept. 11, 2020, in New York. Americans are commemorating 9/11 with tributes that have been altered by coronavirus precautions and woven into the presidential campaign, drawing President Donald Trump and Democratic challenger Joe Biden to pay respects at the same memorial without crossing paths.(AP Photo/Kevin Hagen)
A boy waves to passing motorists to commemorate the anniversary of the Sept. 11 terrorist attacks from an overpass on Interstate 35 Wednesday, Sept. 11, 2019, near Melvern, Kan. Area residents began manning the bridge with flags and waving to motorists on the anniversary in 2002 and have done it ever since. (AP Photo/Charlie Riedel)
A person stops to read names in New Jersey's memorial to the 749 people from the state lost during the Sept. 11 terrorist attacks on the World Trade Center, as One World Trade Center, now up to 104 floors, looms in the distance across the Hudson River, Tuesday, Sept. 11, 2012 in Jersey City, N.J. Americans paused again Tuesday to mark the 11th anniversary of the Sept. 11, 2001, terror attacks with familiar ceremonies, but also a sense that it's time to move forward after a decade of remembrance. (AP Photo/Mel Evans)
A woman reaches out to touch rose on one of the benches of the Pentagon Memorial at the at the Pentagon, Thursday, Sept. 11, 2014. President Barack Obama will attend the wreath laying later this morning to to mark the 13th anniversary of the 9/11 attacks. (AP Photo/Pablo Martinez Monsivais)
Sophia Demos sits with her daughter, Evniki Tsokanis, 4, among a sea of American flags during a memorial Thursday, Sept. 11, 2014, in Matthews, N.C., on the 13th anniversary of the Sept. 11, terrorist attacks. The 2,997 American flags are displayed for each person lost on Sept. 11, 2001. (AP Photo/Chuck Burton)
The Tribute in Light rises above the lower Manhattan skyline, Wednesday, Sept. 11, 2019, as taken from Bayonne, N.J. (AP Photo/Eduardo Munoz Alvarez)
A charred piece of limestone salvaged from the terror attack where American Airlines Flight 77 hit the Pentagon is inscribed with the words "September 11, 2001" is seen on the fifth anniversary of the attack Monday, Sept. 11, 2006, in Washington. Behind the stone lies a time capsule to commemorate victims of the attack. (AP Photo/Charles Dharapak)
Mourners place flowers and pictures in the name cut-out of Kyung Hee (Casey) Cho at the National September 11 Memorial and Museum, Friday, Sept. 11, 2020, in New York. Americans are commemorating 9/11 as a new national crisis in the form of the coronavirus pandemic reconfigures and divides anniversary ceremonies and a presidential campaign carves a path through the observances. (AP Photo/John Minchillo)
Crowds gather on the 18th anniversary of the attacks of Sept. 11, 2001 at the National September 11 Memorial, Wednesday, Sept. 11, 2019 in New York. (AP Photo/Jacqueline Larma)
Red roses are placed next to names names of victims of the Sept. 11, 2001 terrorist attacks on the U.S. at a memorial site during a ceremony marking the 12th anniversary of 9/11 outside Jerusalem, Wednesday, Sept. 11, 2013. (AP Photo/Bernat Armangue)
New York firefighters stand behind a surfboard, below, displaying the names and photos of firefighters killed during the Sept. 11, 2001 attacks, during a Sept. 11 remembrance ceremony Wednesday, Sept. 11, 2013, on the flight deck of the USS Midway aircraft carrier in San Diego. About fifteen New York firefighters, many of whom responded to the World Trade Center on Sept. 11, 2001, were honored Wednesday in San Diego, as they took turns reading the names of fellow firefighters who lost their lives in the attacks. (AP Photo/Gregory Bull)
Chrissy Bortz of Latrobe, Pa., pays her respects at the Wall of Names at the Flight 93 National Memorial in Shanksville, Pa. after a Service of Remembrance Tuesday, Sept. 11, 2018, as the nation marks the 17th anniversary of the Sept. 11, 2001 attacks. The Wall of Names honor the 40 people killed in the crash of Flight 93. (AP Photo/Gene J. Puskar)
Navy Quartermaster Matthew Konchan of Johnstown, Pa., stands in a field of black-eyed Susan as he waits to participate in a wreath laying with Secretary of the Interior Sally Jewell during a memorial service at the Flight 93 National Memorial on Wednesday, Sept. 11, 2013 in Shanksville. (AP Photo/Gene J. Puskar)
A runner stops to take a photograph of names on the "Empty Sky" memorial to New Jersey's victims of the Sept. 11, 2001 terrorist attacks, early Friday, Sept. 11, 2015, in Jersey City, N.J. (AP Photo/Mel Evans)
A couple embraces as friends and relatives of the victims of the Sept. 11 terrorist attacks on the World Trade Center attend a ceremony marking the 11th anniversary of the attacks at the National September 11 Memorial at the World Trade Center site in New York, Tuesday, Sept. 11, 2012. (AP Photo/Jason DeCrow)
People gather during a ceremony marking the 10th anniversary of the attacks on the World Trade Center Sunday, Sept. 11, 2011, outside the World Trade Center site in New York. (AP Photo/Oded Balilty)
The Tribute in Light rises above the New York skyline and One World Trade Center, left, Friday, Sept. 11, 2015, in a view from Bayonne, N.J. It was the 14th anniversary of the Sept. 11 terror attacks on Friday. (AP Photo/Mark Lennihan)
People look at luminaires placed on the steps of the replica of the Parthenon in Nashville, Tenn., Wednesday, Sept. 11, 2002. On each bag is the name of a victim of the Sept. 11, 2001 terrorist attacks. (AP Photo/Mark Humphrey)
Friends and relatives of the victims of the Sept. 11 terrorist attacks on the World Trade Center attend a ceremony marking the 11th anniversary of the attacks at the National September 11 Memorial at the World Trade Center site in New York, Tuesday, Sept. 11, 2012.(AP Photo/Jason DeCrow)
Robert and Briana Genetti, right, of Lincoln, Neb., huddle under a United States flag as they participate in a ceremony held to commemorate the one year anniversary of the attacks of Sept. 11, held at Lincoln's Pioneers Park, Wednesday, Sept 11, 2002. (AP Photo/Nati Harnik)
Petty Officer 2nd Class Jeremy Nash pays his respects Wednesday, Sept. 11 2002, at Marion Square in Charleston, S.C., to those killed a year ago. A flag was placed in the park as a symbol of every life lost during the terrorist attacks. (AP Photo/Paula Illingworth)
Approximately 3,000 pairs of shoes are arranged as a memorial to the victims of the attacks of Sept. 11, 2001, on the town common in Stoneham, Mass., Wednesday, Sept. 11, 2002. (AP Photo/Robert E. Klein)
A visitor takes a picture of the boulder that marks the crash site of United Flight 93 at the Wall of Names after a Service of Remembrance at the Flight 93 National Memorial in Shanksville, Pa, Friday, Sept. 11, 2015. Hundreds of victims' relatives gathered for what has become a tradition of tolling bells, moments of silence and the reading of the names of the nearly 3,000 people killed in the terror strikes at the World Trade Center, the Pentagon and a field near Shanksville, Pennsylvania. (AP Photo/Gene J. Puskar)
The "Tribute in Light" marks the September 11 Anniversary in New York taken from Bayonne, N.J. on Tuesday, Sept. 11, 2007. (AP Photo/Tim Larsen)
Several hundred miniature American flags were placed on the lawn of the Phi Delta Theta fraternity house on the campus of the University of Mississippi to commemorate the 14th anniversary of the Sept. 11 terror attacks on Friday, Sept. 11, 2015, in Oxford, Miss. (AP Photo/Rogelio V. Solis)
Celeste Pocher embraces her daughter after finding her brother in law's name, John Pocher at the north pool at the National September 11 Memorial during a ceremony marking the 10th anniversary of the attacks at the World Trade Center, Sunday, Sept. 11, 2011 in New York. (AP Photo/Mary Altaffer)
Former first lady Laura Bush, from left, former President George W. Bush, first lady Michelle Obama and President Barack Obama hold hands to their hearts during the national anthem as friends and relatives of the victims of 9/11 gather for a ceremony marking the 10th anniversary of the attacks at the National September 11 Memorial at the World Trade Center site, Sunday, Sept. 11, 2011, in New York. (AP Photo/Jason DeCrow)
The Tribute in Light shines above Lower Manhattan, marking the 10th anniversary of the attacks at the World Trade Center site, Sunday, Sept. 11, 2011, in New York. (AP Photo/Matt Rourke)
President Barack Obama lays a wreath at the Pentagon, Wednesday, Sept. 11, 2013, during a ceremony marking the 12th anniversary of the worst terror attack on the US. The Pentagon was struck by one of the hijacked plane. (AP Photo/Manuel Balce Ceneta)
President Barack Obama, first lady Michelle Obama, and others, pause on the South Lawn of the White House in Washington, Friday, Sept. 11, 2015, as they observe a moment of silence to mark the 14th anniversary of the 9/11 attacks. (AP Photo/Andrew Harnik)
Iraq and Afghanistan war veteran U.S. Army Chaplain Capt. Kevin Peek, looks over his speech before he speaks during a ceremony to commemorate the 11th anniversary of the Sept. 11 terrorist attacks on the campus of Georgia Tech Tuesday, Sept. 11, 2012, in Atlanta. (AP Photo/David Goldman)
Retired New York City firefighter Joseph McCormick visits the South Pool prior to a ceremony at the World Trade Center site in New York on Friday, Sept. 11, 2015. With a moment of silence and somber reading of names, victims' relatives began marking the 14th anniversary of Sept. 11 in a subdued gathering Friday at ground zero. (AP Photo/Bryan R. Smith)
New York City Fire Dept. Capt.Tom Engel, of Ladder 133, in the Queens borough of New York, plays taps during the observance at the World Trade Center Memorial held on the eleventh anniversary of the attacks on the World Trade Center, Tuesday, Sept. 11, 2012 in New York. (AP Photo/Mary Altaffer, Pool)
As seen from the Pentagon Memorial, a U.S. flag is draped on the side of the Pentagon where the attack took place on September 11th in 2001, on the 14th anniversary of the attack, Friday Sept. 11, 2015, in Washington. (AP Photo/Jacquelyn Martin)
Yachiyo Kuge, the mother of Toshiya Kuge, of Japan, who was a passenger on Flight 93, carries a lantern to place at her daughter's name on the Wall of Names at the Flight 93 National Memorial in Shanksville, Pa., Thursday, Sept 10, 2015. The new $26 million visitorsâ complex is expected to draw a larger crowd than normal for the 14th anniversary observance at the Flight 93 National Memorial. (AP Photo/Gene J. Puskar)
Rick Sarmiento, center, embraces Karen Bingham, left, and Nancy Root, right, during a visit to the Flight 93 National Memorial on Wednesday, Sept. 10, 2014, Shanksville, Pa. Karen Bingham's son Mark Bingham was a passenger on Flight 93, as was Nancy Root's cousin Lorraine G. Bay. The memorial marks the spot where United Airlines Flight 93 crashed 13 years ago in a reclaimed strip mine some 75 miles southeast of Pittsburgh after passengers fought back against hijackers. (AP Photo/Gene J. Puskar)
Army Sgt. Edwin Morales prays during a ceremony at the World Trade Center site in New York on Friday, Sept. 11, 2015. With a moment of silence and somber reading of names, victims' relatives began marking the 14th anniversary of Sept. 11 in a subdued gathering Friday at ground zero.(AP Photo/Bryan R. Smith)
Christine Box, sister of Firefighter Gary Box, remembers her brother with her daughter Nikki Silva, during a ceremony marking the 11th anniversary of the attacks at the National September 11 Memorial at the World Trade Center site in New York, Tuesday, Sept. 11, 2012. (AP Photo/The Daily News, Todd Maisel, Pool)
John Pristas, a firefighter for the Cranberry Township Volunteer Fire Company, blows "Taps" on a trumpet during a ceremony in marking the anniversary of the terrorist attacks of Sept. 11, 2001, at their 9/11 Memorial in front of the station on Monday, Sept. 11, 2017, in Cranberry, Pa. Butler county. (AP Photo/Keith Srakocic)
President Donald Trump and first lady Melania Trump, stand along the September 11th Flight 93 Memorial, Tuesday, Sept. 11, 2018, in Shanksville, Pa., escorted by (AP Photo/Evan Vucci)
Retired New York firefighter Bruce Stanley carries a photograph of fellow firefighter Leon Smith Jr. during a ceremony at the World Trade Center marking the 17th anniversary of the terrorist attacks on the United States. Tuesday, Sept. 11, 2018, in New York. Smith was one of 343 members of the fire department who were killed on Sept. 11, 2001. (AP Photo/Mark Lennihan)
A woman looks at the north pool of the September 11 Memorial, Monday, Sept. 9, 2019 in New York. Wednesday marks the 18th anniversary of the attacks of Sept. 11, 2001. (AP Photo/Mark Lennihan)
Names of the 40 passengers and crew of Flight 93 are read followed by the ringing of two bells during a memorial service help at the Flight 93 National Memorial in Shanksville, Pa., Friday, Sept. 11, 2020.(AP Photo/Gene J. Puskar)
The Tribute in Light rises behind the Brooklyn Bridge and buildings adjacent to the World Trade Center complex, Wednesday, Sept. 10, 2014 in New York. The tribute, an art installation of 88 searchlights aiming skyward in two columns, is a remembrance of the Sept. 11, 2001, attacks. (AP Photo/Mark Lennihan)
Mourners gather at the north pool adorned with flowers and flags during ceremonies to commemorate the 20th anniversary of the Sept. 11 terrorist attacks, Saturday, Sept. 11, 2021, at the National September 11 Memorial & Museum in New York. (AP Photo/John Minchillo)
President Joe Biden and first lady Jill Biden participate in a wreath ceremony on the 20th anniversary of the terrorist attacks at the Pentagon in Washington, Saturday, Sept. 11, 2021, standing at the National 9/11 Pentagon Memorial site, which commemorates the lives lost at the Pentagon and onboard American Airlines Flight 77. With the President, not shown, are Vice President Kamala Harris and her husband Douglas Emhoff, Secretary of Defense Lloyd Austin and Joint Chiefs Chairman Gen. Mark Milley and his wife Hollyanne Milley. (AP Photo/Alex Brandon)
The annual âTribute in Lightâ is illuminated on the 20th anniversary of the Sept. 11 attacks on Saturday, Sept. 11, 2021, in New York. (AP Photo/Brittainy Newman)
The annual "Tribute in Light" is illuminated above Lower Manhattan on the 20th anniversary of the Sept. 11 terror attacks on Sept. 11, 2021, in New York. (AP Photo/Brittainy Newman)
New York Mets fans wear jerseys to remember the 20th anniversary of the 9/11 terrorist attacks before a baseball game against the New York Yankees on Saturday, Sept. 11, 2021, in New York. (AP Photo/Adam Hunger)



