A New York City fireman calls for 10 more rescue workers to make their way into the rubble of the World Trade Center in September 2001, after a terrorist attack destroyed the buildings. Journalist 1st Class Preston Keres/USN
In memory to those who died in the terrorist attack, the flag that flew over the World Trade Center on September 11, 2001 is held by members of the United States Olympic team, is displayed as the US national anthem is played at the Opening Ceremonies of the Salt Lake 2002 Winter Olympics in Salt Lake City. JO1 Preston Keres, USN
Keith Kaseman (left) and Julie Beckman explain the winning design of the Pentagon Memorial, called “Light Benches”, to reporters at a Pentagon press conference on March 3, 2003. Helene Stikkel/DOD
In 2004, two beams of light represent the former Twin Towers of the World Trade Center during the 2004 memorial of the September 11, 2001 attacks in New York City. Derek Jensen
First Lt. Jeremy Smith conducts preflight checks on an EC-130H Compass Call aircraft before takeoff here to support Afghanistan’s National Assembly elections in September 2005. Capt. James Cunningham
Viewing the makeshift memorial during the fifth anniversary commemoration service at the Flight 93 National Memorial near Shanksville, Somerset County, Penn., on Sept. 11, 2006. Dave Whelan
Paratroopers from the 782nd Brigade Support Battalion, 4th Brigade Combat Team, 82nd Airborne Division watch as C-17 Globemaster IIIs air drop combat cargo bundles carrying food and water in Paktika Province, Afghanistan, in 2007. Spc. Micah Clare/USA
People sing “God Bless America” at the Pentagon Memorial dedication ceremony Sept. 11, 2008. Master Sgt. Adam Stump
Temporary memorial at the Flight 93 crash site in Shanksville, Pa. Kevin Burkett
U.S. Air Force A-10 Thunderbolt aircraft maneuvers into position behind a U.S. Air Force KC-135 Stratotanker aircraft assigned to the 340th Expeditionary Air Refueling Squadron, while taking on fuel over Afghanistan in support of Operation Enduring Freedom in 2010. Staff Sgt. Andy Kin
The Pentagon before and after. Photo courtesy of Jason Powell.
Original photo taken by Lisa Borges, courtesy of the U.S. Navy.
Staff Sgt Mackenzie Donell, 11th Security Forces Group wears a memorial patch during a 9/11 Memorial Ruck March Sept. 11, 2012, at Joint Base Andrews, Md., in remembrance of the Sept. 11 terrorist attacks. Staff Sgt. Perry Aston
Army 101st Airborne Division Soldiers make their way to a 774th Expeditionary Airlift Squadron C-130 Hercules cargo plane at Forward Operating Base Salerno, Khost province, Afghanistan, in 2013. Master Sgt. Ben Bloker
U.S. Air Force Airmen with the 455th Expeditionary Aerial Port Squadron load cargo into a C-17 Globemaster III at Bagram Airfield in September 2014. Master Sgt. Cohen Young
People attend the annual September 11 observance ceremony to honor the 40 passengers and crew of United Flight 93, in Shanksville, Pa., Sept. 11, 2015. Barry Bahler/DHS
The World Trade Center memorial on Sept. 11, 2016. Stephanie Krauss
First Responders salute a large American flag as it’s unfurled over the west side of the Pentagon at sunrise in Washington, D.C., Sept. 11, 2017. Navy Petty Officer 1st Class Dominique Pineiro
22nd Security Forces Squadron members perfrom a flag folding ceremony during Patriot Day at McConnell Air Force Base, Kan. The ceremony remembered the terror attacks of September 11, 2001 with a Patriot Day ceremony, to pay special tribute to the victims and families of those lost in New York, Pennsylvania and in the Pentagon. Senior Airman Jenna Caldwell
An Airman salutes during the sequence of events at the 9/11 memorial ceremony held on Joint Base Andrews, Md. Sept. 11, 2019. Airman 1st Class Noah Sudolcan
A wreath is laid at the Pentagon Memorial during the Pentagon 9/11 Observance Ceremony in Washington D.C., Sept. 11, 2020. Petty Officer 1st Class Carlos Vazquez II
