America marks the 17th anniversary of the Sept. 11 terrorist attacks

A rose stands along the north pool at the 9/11 Memorial and Museum in New York during a commemoration ceremony for the victims of the 2001 terrorist attacks.

By Marc Martin

Sept. 11, 2018 9:05 AM PT

Remembrance ceremonies were held around the nation Tuesday to honor the nearly 3,000 people who died 17 years ago in the 9/11 terrorist attacks.

New York

People walk under an American flag inside the Oculus, part of the World Trade Center transportation hub, on the anniversary of 9/11 terrorist attacks in New York on Tuesday, Sept. 11, 2018. (AP Photo/Craig Ruttle)

People walk under an American flag inside the Oculus, part of the World Trade Center Transportation Hub in New York, on the anniversary of the 9/11 terrorist attacks.

A man looks at the north reflecting pool, which sits in the footprint where the north tower of the World Trade Center once stood.

NEW YORK, NY - SEPTEMBER 11: People walk through the Oculus located at the World Trade Center site during a morning commemoration ceremony for the victims of the terrorist attacks seventeen years after the day on September 11, 2018 in New York City. Throughout the country services are being held to remember the 2,977 people who were killed in New York, the Pentagon and in a field in rural Pennsylvania on what was one of the worst attacks on American soil in the nations history. (Photo by Spencer Platt/Getty Images)

People walk through the Oculus at the former World Trade Center site on the 17th anniversary of the Sept. 11 terrorist attacks.

Malibu

Pepperdine University’s “Waves of Flags” display in Alumni Park in Malibu features 2,977 flags: 2,887 American flags for each American life lost and 90 international flags representing the home countries of individuals from abroad who were killed in the terrorist attacks.

Los Angeles

With tears in her eyes, Los Angeles Police Sergeant Heidi Stoecklein touches the 23-ton, 22-foot tall memorial steel column that was originally part of the World Trade Center, remembering the 343 firefighters who died in the towers at the annual Los Angeles Fire Department 9/11 Remembrance Ceremony at the Hotchkins Memorial Training Center.

LOS ANGELES, CA â SEPTEMBER 11, 2018: Daryl L. Osby, right, Fire Chief of Los Angeles County with LA County Sheriff Jim McDonald performs "The Ringing of the Bell" ceremony in front of the 23-ton, 22-foot tall steel column that was originally part of the lobby structure of the World Trade Center, thought to be the largest remnant of the attacks on the west coast remembering the 343 firefighters who died in the towers as he addresses the large crowd gathered at the annual Los Angeles Fire Department 9/11 Remembrance Ceremony at the Hotchkins Memorial Training Center marking the 17th anniversary of September 11, 2018. (Al Seib / Los Angeles Times)

LA County Sheriff Jim McDonald, left and Los Angeles County Fire Chief Daryl L. Osby, perform "The Ringing of the Bell" ceremony at the annual Los Angeles Fire Department 9/11 Remembrance Ceremony at the Hotchkins Memorial Training Center.

Arlington, Va.

A U.S. flag is unfurled at sunrise on Tuesday, Sept. 11, 2018, at the Pentagon on the 17th anniversary of the Sept. 11, 2001, terrorist attacks. (AP Photo/Pablo Martinez Monsivais)

An American flag is unfurled at sunrise at the Pentagon. Seventeen years ago, 184 were killed when Flight 77 crashed into the building.

Shanksville, Pa.

Visitors to the Flight 93 National Memorial hold a giant flag during a moment of remembrance. United Airlines Flight 93 crashed into a field outside Shanksville, Pa., as passengers and crew tried to retake control from the terrorists.