Monday marks the 22nd anniversary of the Sept. 11 attacks on America and communities across the country are pausing to mark the solemn occasion.
On Sept. 11, 2001, terrorists hijacked four planes, crashing two into the Twin Towers of New York City’s World Trade Center, the third into the side of the Pentagon outside of Washington, D.C. in Arlington, Virginia, CNN reported. The fourth plane was brought down in a field in Shanksville, Pennsylvania.
Almost 3,000 people were killed at the three locations in only a few hours.
Still, more than two decades later, about 40% of victims, or 1,100 people who were thought to have died, are still not identified. But efforts continue as two more victims were recently identified through DNA testing.
[ Remains of 2 victims killed in 9/11 attack identified days ahead of 22nd anniversary ]
The three sites — Ground Zero, the Pentagon and Shanksville — will each hold a ceremony to remember the lives lost that day, The Associated Press reported.
Vice President Kamala Harris will be part of the ceremony at the National Sept. 11 Memorial and Museum plaza where each name of the victims will be read by their relatives.
James Giaccone is taking part once again, reading the name of his brother, Joseph, who was 43 when he was killed in the attacks.
“If their name is spoken out loud, they don’t disappear,” Giaccone said, according to the AP. “I hope I never see the day when they minimize this. It’s a day that changed history.”
The names of the victims of the Feb. 26, 1993, World Trade Center Bombing will also be read, WABC reported.
There will also be six moments of silence during the New York ceremony — one each for when the towers were hit, when they fell, when the Pentagon was hit and when United Flight 93 crashed, according to WABC.
The event is expected to finish at 12:30 p.m.
You can read the names on the 9/11 Memorial & Museum’s website.
[ Remembering 9/11: Tools to teach kids about Sept. 11 ]
But the ceremonies are not just at the three memorial sites. President Joe Biden will stop at a military base in Anchorage, Alaska, to participate in a ceremony while he is en route back to Washington, D.C. after his trip to India and Vietnam for the G20 summit.
This is the first time a president has marked the anniversary in the western part of the country, with each of his predecessors holding an event at the White House and visiting at least one of the sites during the day, the AP reported.
First lady Jill Biden, however, is scheduled to lay a wreath at the Pentagon’s 9/11 memorial, while Harris’ husband, Doug Emhoff, is scheduled to appear at the ceremony at the Flight 93 National Memorial, the AP reported.
Finally, The Tribute in Light will once again become a beacon in the night sky, honoring those who were killed 22 years ago. The lights, installed on the roof of the Battery Parking Garage just south of the memorial, will stretch four miles into the sky, mimicking the shape and orientation of the World Trade Center’s Twin Towers, WABC reported. They will be lit from dusk until they fade away at dawn. They can be seen in a 60-mile radius from Lower Manhattan, NY1 reported.
Flags will be flown at half-staff and 16 state landmarks and bridges will be bathed in blue to mark the anniversary.
9/11 anniversary SHANKSVILLE, PENNSYLVANIA - SEPTEMBER 11: Family members of the victims wait in line to recite their name during the bell-ringing ceremony commemorating the 22nd anniversary of the crash of Flight 93 during the September 11, 2001 terrorist attacks at the Flight 93 National Memorial on September 11, 2023 in Shanksville, Pennsylvania. The nation is marking the 22nd anniversary of the September 11 attacks, when the terrorist group al-Qaeda flew hijacked airplanes into the World Trade Center, Shanksville, PA and the Pentagon, killing nearly 3,000 people. (Photo by Jeff Swensen/Getty Images) (Jeff Swensen/Getty Images)
9/11 anniversary SHANKSVILLE, PENNSYLVANIA - SEPTEMBER 11: Visitors listen to the roll call of names of the victims during a ceremony commemorating the 22nd anniversary of the crash of Flight 93 during the September 11, 2001 terrorist attacks at the Flight 93 National Memorial on September 11, 2023 in Shanksville, Pennsylvania. The nation is marking the 22nd anniversary of the September 11 attacks, when the terrorist group al-Qaeda flew hijacked airplanes into the World Trade Center, Shanksville, PA and the Pentagon, killing nearly 3,000 people. (Photo by Jeff Swensen/Getty Images) (Jeff Swensen/Getty Images)
9/11 anniversary NEW YORK, NEW YORK - SEPTEMBER 11: A person walks near Ground Zero with a Remember 9/11 flag on September 11, 2023 in New York City. Family and friends honored the lives of their lost loved ones on the 22nd anniversary of the terror attacks of September 11, 2001, at the World Trade Center, Shanksville, PA and the Pentagon, that killed nearly 3,000 people. (Photo by David Dee Delgado/Getty Images) (David Dee Delgado/Getty Images)
9/11 anniversary SHANKSVILLE, PENNSYLVANIA - SEPTEMBER 11: Visitors listen to the roll call of names of the victims during a ceremony commemorating the 22nd anniversary of the crash of Flight 93 during the September 11, 2001 terrorist attacks at the Flight 93 National Memorial on September 11, 2023 in Shanksville, Pennsylvania. The nation is marking the 22nd anniversary of the September 11 attacks, when the terrorist group al-Qaeda flew hijacked airplanes into the World Trade Center, Shanksville, PA and the Pentagon, killing nearly 3,000 people. (Photo by Jeff Swensen/Getty Images) (Jeff Swensen/Getty Images)
9/11 anniversary NEW YORK, NEW YORK - SEPTEMBER 11: A flower is left on a name at the 9/11 Memorial at the Ground Zero site in lower Manhattan as the nation commemorates the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 anniversary NEW YORK, NEW YORK - SEPTEMBER 11: Two people embrace during a moment of silence at Ground Zero on September 11, 2023 in New York City. Family and friends honored the lives of their lost loved ones on the 22nd anniversary of the terror attacks of September 11, 2001, at the World Trade Center, Shanksville, PA and the Pentagon, that killed nearly 3,000 people. (Photo by David Dee Delgado/Getty Images) (David Dee Delgado/Getty Images)
9/11 anniversary SHANKSVILLE, PENNSYLVANIA - SEPTEMBER 11: A relative of one of the victims pays his respects at the Wall of Names before a ceremony commemorating the 22nd anniversary of the crash of Flight 93 during the September 11, 2001 terrorist attacks at the Flight 93 National Memorial on September 11, 2023 in Shanksville, Pennsylvania. The nation is marking the 22nd anniversary of the September 11 attacks, when the terrorist group al-Qaeda flew hijacked airplanes into the World Trade Center, Shanksville, PA and the Pentagon, killing nearly 3,000 people. (Photo by Jeff Swensen/Getty Images) (Jeff Swensen/Getty Images)
9/11 anniversary SHANKSVILLE, PENNSYLVANIA - SEPTEMBER 11: The Wall of Names catches the early morning light before a ceremony commemorating the 22nd anniversary of the crash of Flight 93 during the September 11, 2001 terrorist attacks at the Flight 93 National Memorial on September 11, 2023 in Shanksville, Pennsylvania. The nation is marking the 22nd anniversary of the September 11 attacks, when the terrorist group al-Qaeda flew hijacked airplanes into the World Trade Center, Shanksville, PA and the Pentagon, killing nearly 3,000 people. (Photo by Jeff Swensen/Getty Images) (Jeff Swensen/Getty Images)
9/11 anniversary NEW YORK, NEW YORK - SEPTEMBER 11: People visit the 9/11 Memorial at the Ground Zero site in lower Manhattan as the nation commemorates the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 anniversary SHANKSVILLE, PENNSYLVANIA - SEPTEMBER 11: (EDITOR'S NOTE: Alternate crop.) A relative of one of the victims pays her respects at the Wall of Names before a ceremony commemorating the 22nd anniversary of the crash of Flight 93 during the September 11, 2001 terrorist attacks at the Flight 93 National Memorial on September 11, 2023 in Shanksville, Pennsylvania. The nation is marking the 22nd anniversary of the September 11 attacks, when the terrorist group al-Qaeda flew hijacked airplanes into the World Trade Center, Shanksville, PA and the Pentagon, killing nearly 3,000 people. (Photo by Jeff Swensen/Getty Images) (Jeff Swensen/Getty Images)
9/11 anniversary SHANKSVILLE, PENNSYLVANIA - SEPTEMBER 11: Visitors stroll through the national park grounds during a ceremony commemorating the 22nd anniversary of the crash of Flight 93 during the September 11, 2001 terrorist attacks at the Flight 93 National Memorial on September 11, 2023 in Shanksville, Pennsylvania. The nation is marking the 22nd anniversary of the September 11 attacks, when the terrorist group al-Qaeda flew hijacked airplanes into the World Trade Center, Shanksville, PA and the Pentagon, killing nearly 3,000 people. (Photo by Jeff Swensen/Getty Images) (Jeff Swensen/Getty Images)
9/11 anniversary NEW YORK, NEW YORK - SEPTEMBER 11: People visit the 9/11 Memorial at the Ground Zero site in lower Manhattan as the nation commemorates the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 anniversary ARLINGTON, VIRGINIA - SEPTEMBER 11: Family members of victims visit the National 9/11 Pentagon Memorial during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
9/11 anniversary ARLINGTON, VIRGINIA - SEPTEMBER 11: U.S. Secretary of Defense Lloyd Austin participates in a wreath laying ceremony during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
9/11 anniversary ARLINGTON, VIRGINIA - SEPTEMBER 11: Family members of victims visit the National 9/11 Pentagon Memorial during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
9/11 anniversary ARLINGTON, VIRGINIA - SEPTEMBER 11: Family members of victims visit the National 9/11 Pentagon Memorial during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
9/11 anniversary ARLINGTON, VIRGINIA - SEPTEMBER 11: Family members of victims visit the National 9/11 Pentagon Memorial during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
9/11 anniversary ARLINGTON, VIRGINIA - SEPTEMBER 11: Victim's names are seen in a program during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of the September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
9/11 anniversary NEW YORK, NEW YORK - SEPTEMBER 11: Former New York City mayor Rudy Giuliani attends services at the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan as the nation commemorates the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 anniversary WASHINGTON, DC - SEPTEMBER 11: A jogger runs past American flags flying at half staff around the Washington Monument on the National Mall on September 11, 2023 in Washington, DC. U.S. Leaders are observing the 22nd anniversary of the terror attacks around the country with first lady Jill Biden attending a ceremony at the National 9/11 Pentagon Memorial and U.S. President Joe Biden speaking to service members in Alaska. (Photo by Anna Moneymaker/Getty Images) (Anna Moneymaker/Getty Images)
9/11 anniversary ARLINGTON, VIRGINIA - SEPTEMBER 11: A man wearing a firefighter's uniform visits the National 9/11 Pentagon Memorial during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
9/11 anniversary NEW YORK, NEW YORK - SEPTEMBER 11: Family, politicians, police, firefighters and others pay their respects as they visit the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan for commemoration ceremonies during the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 anniversary NEW YORK, NEW YORK - SEPTEMBER 11: Firefighters and members of the police take part in the ceremony at the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan during commemoration ceremonies for the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 anniversary NEW YORK, NEW YORK - SEPTEMBER 11: Family, politicians, police, firefighters and others pay their respects as they visit the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan for commemoration ceremonies during the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 anniversary ARLINGTON, VIRGINIA - SEPTEMBER 11: A detail of a wreath as U.S. Secretary of Defense Lloyd Austin (not pictured) participates in a wreath laying ceremony during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
9/11 anniversary NEW YORK, NEW YORK - SEPTEMBER 11: Former New York City Mayor Michael Bloomberg stands with Vice President Kamala Harris (center) and New York Governor Kathy Hochul as they attend services at the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan as the nation commemorates the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 anniversary ARLINGTON, VIRGINIA - SEPTEMBER 11: A detail of a wreath as U.S. Secretary of Defense Lloyd Austin (not pictured) participates in a wreath laying ceremony during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
9/11 anniversary NEW YORK, NEW YORK - SEPTEMBER 11: Firefighters and members of the police take part in the ceremony at the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan during commemoration ceremonies for the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 anniversary ARLINGTON, VIRGINIA - SEPTEMBER 11: Members of the Navy participate in a moment of silence during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of the September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon, and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
9/11 anniversary WASHINGTON, DC - SEPTEMBER 11: A jogger carries the American flag as they run along the National Mall on September 11, 2023 in Washington, DC. U.S. Leaders are observing the 22nd anniversary of the 9/11 terrorist attacks around the country with first lady Jill Biden attending a ceremony at the National 9/11 Pentagon Memorial and U.S. President Joe Biden speaking to service members in Alaska. (Photo by Anna Moneymaker/Getty Images) (Anna Moneymaker/Getty Images)
9/11 Anniversary ARLINGTON, VIRGINIA - SEPTEMBER 11: Family members of victims attend a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
9/11 Anniversary NEW YORK, NEW YORK - SEPTEMBER 11: Retired police officer Sam Pulia places flags on the names along the 9/11 Memorial at the Ground Zero site in lower Manhattan as the nation commemorates the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 Anniversary NEW YORK, NEW YORK - SEPTEMBER 11: Police and firefighters visit the 9/11 Memorial at the Ground Zero site in lower Manhattan as the nation commemorates the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 Anniversary NEW YORK, NEW YORK - SEPTEMBER 11: Diane walks with a picture of her former husband Michael Massaroli as eople visit the 9/11 Memorial at the Ground Zero site in lower Manhattan as the nation commemorates the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 Anniversary NEW YORK, NEW YORK - SEPTEMBER 11: Retired police officer Sam Pulia places flags on the names along the 9/11 Memorial at the Ground Zero site in lower Manhattan as the nation commemorates the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
9/11 Anniversary NEW YORK, NEW YORK - SEPTEMBER 11: Retired firefighter Vincent Forras holds an American Flag with the names of September 11 victims while at the 9/11 Memorial at the Ground Zero site in lower Manhattan as the nation commemorates the 22nd anniversary of the attacks on September 11, 2023 in New York City. Monday marks the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
22nd anniversary of 9/11 ARLINGTON, VIRGINIA - SEPTEMBER 11: A rose is placed on a bench at the National 9/11 Pentagon Memorial during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
22nd anniversary of 9/11 ARLINGTON, VIRGINIA - SEPTEMBER 11: First responders watch as an American flag is unfurled during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
22nd anniversary of 9/11 ARLINGTON, VIRGINIA - SEPTEMBER 11: A first responders watches as an American flag is unfurled during a ceremony observing the 9/11 terrorist attacks at the Pentagon on September 11, 2023 in Arlington, Virginia. The Defense Department held a remembrance ceremony for the 184 lives lost in the 2001 terrorist attack on the Pentagon. Today marks the 22nd anniversary of September 11, 2001 terrorist attacks at the World Trade Center, the Pentagon and Shanksville, Pennsylvania. (Photo by Win McNamee/Getty Images) (Win McNamee/Getty Images)
22nd Anniversary Of 9/11 NEW YORK, NEW YORK - SEPTEMBER 10: People visit the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan as the nation prepares to commemorate the 22nd anniversary of the attacks on September 10, 2023 in New York City. Monday will mark the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
22nd Anniversary Of 9/11 NEW YORK, NEW YORK - SEPTEMBER 10: People walk through the Westfield World Trade Center, also known as the Oculus, near the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan as the nation prepares to commemorate the 22nd anniversary of the attacks on September 10, 2023 in New York City. Monday will mark the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
22nd Anniversary Of 9/11 NEW YORK, NEW YORK - SEPTEMBER 10: A woman mourns by a name at the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan as the nation prepares to commemorate the 22nd anniversary of the attacks on September 10, 2023 in New York City. Monday will mark the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
22nd Anniversary Of 9/11 NEW YORK, NEW YORK - SEPTEMBER 10: People visit the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan as the nation prepares to commemorate the 22nd anniversary of the attacks on September 10, 2023 in New York City. Monday will mark the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
22nd Anniversary Of 9/11 NEW YORK, NEW YORK - SEPTEMBER 10: People visit the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan as the nation prepares to commemorate the 22nd anniversary of the attacks on September 10, 2023 in New York City. Monday will mark the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
22nd Anniversary Of 9/11 NEW YORK, NEW YORK - SEPTEMBER 10: People visit the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan as the nation prepares to commemorate the 22nd anniversary of the attacks on September 10, 2023 in New York City. Monday will mark the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
22nd Anniversary Of 9/11 NEW YORK, NEW YORK - SEPTEMBER 10: People visit the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan as the nation prepares to commemorate the 22nd anniversary of the attacks on September 10, 2023 in New York City. Monday will mark the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)
22nd Anniversary Of 9/11 NEW YORK, NEW YORK - SEPTEMBER 10: People visit the 9/11 Memorial and Museum at the Ground Zero site in lower Manhattan as the nation prepares to commemorate the 22nd anniversary of the attacks on September 10, 2023 in New York City. Monday will mark the 22nd anniversary of the September 11 terrorist attacks on the World Trade Center and the Pentagon, as well as the crash of United Airlines Flight 93. In total, the attacks killed nearly 3,000 people and commenced a global war on terror which included American led conflicts in both Iraq and Afghanistan. (Photo by Spencer Platt/Getty Images) (Spencer Platt/Getty Images)