See photos from ceremonies honoring those lost on Sept. 11, 21 years later

Loved ones of those lost on Sept. 11, 2001 gather on Sunday at the National Sept. 11 Memorial & Museum to honor the 21st anniversary.

Loved ones of those lost on Sept. 11, 2001 gather on Sunday at the National Sept. 11 Memorial & Museum site on the 21st anniversary.

Loved ones of those lost on Sept. 11, 2001 gather on Sunday at the National Sept. 11 Memorial & Museum site.

Firefighters pause after the ringing of the bell marks the first attack on the World Trade Center on Sept. 11, 2001 during a ceremony at the National Sept. 11 Memorial & Museum.

A victim is remembered on Sunday at the 9/11 memorial ceremony in lower Manhattan.

Names are read aloud at Ground Zero on Sunday in New York.

A bell rings at Ground Zero on Sunday.

Vice President Kamala Harris attends the ceremony in lower Manhattan on Sunday.

Vice President Kamala Harris stands with New York City Mayor Eric Adams and NYPD Commissioner Keechant Sewell at the ceremony in Manhattan.

An officer remembers his cousin in lower Manhattan on Sunday.

Attendees remember loved ones and use their smartphones to capture the ceremony on Sunday.

A moment of silence at Ground Zero on Sunday in New York.

The opening ceremony at Ground Zero on Sunday.

Gov. Kathy Hochul is among the dignitaries attending the 9/11 memorial ceremony in lower Manhattan on Sunday.

An officer and a fellow attendee embrace at the World Trade Center memorial ceremony in lower Manhattan on Sunday.

Loved ones of those lost on Sept. 11, 2001 gather on Sunday at the National Sept. 11 Memorial & Museum to honor the 21st anniversary.

Bianca Marcial, 16, carbon copies her aunt's name on a piece of paper at Ground Zero.

Bianca Marcial, 16, and her sister Cataleya, 3, carbon copies her aunt's name on a piece of paper at Ground Zero.

A retired Colonel Davis from the U. S. Army Nurse Corps pays her respects to another fellow officer who died at Ground Zero on Sunday in New York.

A woman gets emotional as names are read aloud at Ground Zero.

Flags and flowers are placed in memory of those who died at Ground Zero.

Flags and flowers are placed in memory of those who died at Ground Zero.

Flags and flowers are placed in memory of those who died at Ground Zero.

Linda Torrens of the Bronx holds a photo of her cousin Jenine Nicole Gonzalez, and touches her name at the Memorial Pool, who she says she raised, during ceremonies Sunday, Sept. 11, 2022, at the 9/11 Memorial and Museum site to honor those lost on this day, the 21st anniversary of the world changing event. Torrens says Gonzalez was killed on the 105th floor, Tower 2, during the attacks in 2001.

People attend the Point Lookout 9/11 memorial ceremony on Sunday.

Carol Shields, of Baldwin, at the Point Lookout 9/11 memorial ceremony on Sunday.

Firefighters attend the Point Lookout 9/11 memorial ceremony on Sunday.

Visitors stand during the Pledge of Allegiance at the Point Lookout 9/11 memorial ceremony on Sunday.

David Marcano, a retired detective, makes a rubbing of the name of his friend and colleague, John Chipuro, at the Point Lookout 9/11 memorial ceremony on Sunday.

Lieutenant Patrick Igoe, of Long Beach, throws a carnation in the ocean at the Point Lookout 9/11 memorial ceremony on Sunday.

People gather for the Point Lookout 9/11 memorial ceremony on Sunday.

East Islip American Legion trumpeter signals the conclusion of the annual 9/11 Memorial Ceremony at Veterans Memorial Park in Islip on Sunday, Sept. 11, 2022.

Flowers are left at the 9/11 memorial to show support for 9/11 victims at the annual 9/11 Memorial Ceremony at Veterans Memorial Park in Islip on Sunday, Sept. 11, 2022.

Aunt and Uncle of Josephine and Peter Kenney of victim Christopher P. Sullivan, FDNY, at The Farmingdale United Methodist Church The Healing Service at 9:30AM on Sunday, September 11, 2022, the 21st anniversary of 9-11. Following the service we will tie ribbons on the Memorial Tree dedicated to Lt. Christopher P. Sullivan, FDNY, who generously led our Nursery School children in fire safety. Sept. 11, 2022

The Farmingdale United Methodist Church will hold a Healing Service at 9:30AM on Sunday, September 11, 2022, the 21st anniversary of 9-11. Following the service we will tie ribbons on the Memorial Tree dedicated to Lt. Christopher P. Sullivan, FDNY, who generously led our Nursery School children in fire safety. Sept. 11, 2022

Pastor Clair Wu during The Farmingdale United Methodist Church The Healing Service at 9:30AM on Sunday, September 11, 2022, the 21st anniversary of 9-11. Following the service we will tie ribbons on the Memorial Tree dedicated to Lt. Christopher P. Sullivan, FDNY, who generously led our Nursery School children in fire safety. Sept. 11, 2022

Participants at the 9/11 memorial ceremony in Point Lookout, Sept. 11, 2022.

Paul Buckheit, of Belllmore, pays respect of aa fallen FDNY firefighter he know at the Cemetery of the Holy Rood in Westbury on Sunday, Sept. 11, 2022.

Members of the Hempstead Fire Department pay respects at the 9/11 Memorial inside the Cemetery of the Holy Rood in Westbury on Sunday, Sept. 11, 2022.

Ralph Licciard, of Franklin Square, pays respects for his father Ralph Licciard, at the 9/11 Memorial at the Cemetery of the Holy Rood in Westbury on Sunday, Sept. 11, 2022.

Dana Caputo, 23, of Commack, takes a picture of her grandfather’s name, Thomas DeAngelis, on the 9/11 Memorial at the Cemetery of the Holy Rood in Westbury on Sunday, Sept. 11, 2022.

Solange Schwalee of Los Angeles, who at one point worked for four months in the pit of Tower 1 as a Safety Monitor in early 2002 (facing camera), is hugged by Crisis Councilor Pamela Bolden, with the Tri-State Canine Response Team Sunday, Sept. 11, 2022, at the 9/11 Memorial and Museum. Today marked the 21st anniversary of the attacks of 2001.

Flowers and mementoes left by loved ones of those lost during the attacks at the World Trade Center on September 11, 2001 line memorial pool rim Sunday, Sept. 11, 2022, at the 9/11 Memorial and Museum site to honor those lost on this day, the 21st anniversary of the world changing event.

Flowers and mementoes left by loved ones of those lost during the attacks at the World Trade Center on September 11, 2001 line memorial pool rim Sunday, Sept. 11, 2022, at the 9/11 Memorial and Museum site to honor those lost on this day, the 21st anniversary of the world changing event.

Flowers and mementoes, and even an black and white cookie, left by loved ones of those lost during the attacks at the World Trade Center on September 11, 2001 line memorial pool rim Sunday, Sept. 11, 2022, at the 9/11 Memorial and Museum site to honor those lost on this day, the 21st anniversary of the world changing event.

Flowers and mementoes left by loved ones of those lost during the attacks at the World Trade Center on September 11, 2001 line memorial pool rim Sunday, Sept. 11, 2022, at the 9/11 Memorial and Museum site to honor those lost on this day, the 21st anniversary of the world changing event.

Stephany and Ken Bell, of Westbury, visit the 9/11 Memorial in Eisenhower Park, Sept. 11, 2022.

Tejinder Singh, 28, of East Meadow, leaves roses at the base of a beam from the World Trade Center at the 9/11 Memorial in Eisenhower Park, Sept. 11, 2022.

Raphael Mosquera, of Queens, visits the 9/11 Memorial in Eisenhower Park with his daughters, Elizabeth, 9, and Esther, 3, Sept. 11, 2022.

Jerico firefighter, Andrew Sausmer, visits at the 9/11 Memorial in Eisenhower Park, Sept. 11, 2022.