01of 13Nykiah Morgan.Thomas A. Ferrara/Newsday RM via GettyNykiah Morgan holds up a photo of her mother Dororthy Morgan, who died in the 9/11 attack on the the World Trade Center. It took 20 years for the New York City medical examiner’s office to identify Dororthy’s remains.
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Nykiah Morgan.Thomas A. Ferrara/Newsday RM via Getty

Nykiah Morgan holds up a photo of her mother Dororthy Morgan, who died in the 9/11 attack on the the World Trade Center. It took 20 years for the New York City medical examiner’s office to identify Dororthy’s remains.
02of 13JEWEL SAMAD/AFP via GettyHigh school students draw the Twin Towers and write messages on the sidewalk in front of their school in observance of the 16th anniversary of the attacks.
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JEWEL SAMAD/AFP via Getty

High school students draw the Twin Towers and write messages on the sidewalk in front of their school in observance of the 16th anniversary of the attacks.
03of 13Spencer Platt/GettyFamily members of fallen officers watch a procession in downtown Manhattan to mark the 15th anniversary of the 9/11 attacks in 2016. Families, officers and friends gathered for remarks and a wreath laying at a wall commemorating fallen officers.
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Spencer Platt/Getty

Family members of fallen officers watch a procession in downtown Manhattan to mark the 15th anniversary of the 9/11 attacks in 2016. Families, officers and friends gathered for remarks and a wreath laying at a wall commemorating fallen officers.
04of 13Chip Somodevilla/GettyNYPD Officer Joseph Safatle shows the photograph of his uncle, Officer James Leahy, that he carries inside his hat during the unveiling of the 9/11 Memorial Wall honoring the NPYD on Sept. 7, 2021, in New York City.
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Chip Somodevilla/Getty

NYPD Officer Joseph Safatle shows the photograph of his uncle, Officer James Leahy, that he carries inside his hat during the unveiling of the 9/11 Memorial Wall honoring the NPYD on Sept. 7, 2021, in New York City.
05of 13Drew Angerer/GettyRetired New York City firefighter Bruce Stanley holds a portrait of his late friend Liam Smith Jr., a New York City firefighter who died in the 9/11 attacks, during a commemoration ceremony for the victims at the National September 11 Memorial in 2018.
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Drew Angerer/Getty

Retired New York City firefighter Bruce Stanley holds a portrait of his late friend Liam Smith Jr., a New York City firefighter who died in the 9/11 attacks, during a commemoration ceremony for the victims at the National September 11 Memorial in 2018.
06of 13Paul Bersebach/Digital First Media/Orange County Register via GettyJay Bellamy and friends say a prayer over Bellamy’s sand sculpture in Dana Point, California, in remembrance of the 9/11 attacks.
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Paul Bersebach/Digital First Media/Orange County Register via Getty

Jay Bellamy and friends say a prayer over Bellamy’s sand sculpture in Dana Point, California, in remembrance of the 9/11 attacks.
07of 13TIMOTHY A. CLARY/AFP via GettyAl Kim holds up a photo during his visit the National 9/11 Memorial & Museum on July 12, 2021, in New York City. Kim narrowly escaped when the World Trade Center’s South Tower collapsed on 9/11.
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TIMOTHY A. CLARY/AFP via Getty

Al Kim holds up a photo during his visit the National 9/11 Memorial & Museum on July 12, 2021, in New York City. Kim narrowly escaped when the World Trade Center’s South Tower collapsed on 9/11.
08of 13KENA BETANCUR/AFP via GettyPeople leave flags, notes and flowers at the Jersey City 9/11 Memorial in New Jersey on July 29, 2021.
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KENA BETANCUR/AFP via Getty

People leave flags, notes and flowers at the Jersey City 9/11 Memorial in New Jersey on July 29, 2021.
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ANGELA WEISS/AFP via Getty

Twenty years after the attacks, members still talk regularly and have formed strong friendships through support groups that have helped ease the pain from their trauma.
11of 13ANGELA WEISS/AFP via GettyPhotos and messages from loved ones are created into art pieces and donated to the Voices of September 11 organization.
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Photos and messages from loved ones are created into art pieces and donated to the Voices of September 11 organization.
12of 13BRYAN R. SMITH/AFP via GettyA family member who lost a loved one holds up a photo during the 15th anniversary of September 11th at the 9/11 Memorial and Museum in 2016 in New York City.
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BRYAN R. SMITH/AFP via Getty

A family member who lost a loved one holds up a photo during the 15th anniversary of September 11th at the 9/11 Memorial and Museum in 2016 in New York City.
13of 13STAN HONDA/AFP/Getty Images.Every year since 2002, Tribute in Light — an installation that recreates the Twin Towers out of lights in lower Manhattan — has illuminated New York City around the anniversary of the attacks.
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STAN HONDA/AFP/Getty Images.

Every year since 2002, Tribute in Light — an installation that recreates the Twin Towers out of lights in lower Manhattan — has illuminated New York City around the anniversary of the attacks.
source: people.com