In Photos: US honors fallen on 23rd anniversary of 9/11

American flags are displayed next to a cross commemorating those killed when hijacked Flight 93 crashed into an open field on Sept. 11, 2001, in Shanksville, Pennsylvania, Sept. 11, 2024.

A member of the National Park Service brings a wreath out to the crash site at the Flight 93 National Memorial on the 23rd anniversary of the terror attacks in Shanksville, Pennsylvania, Sept. 11, 2024.

Vice President Kamala Harris, President Joe Biden, former New York City mayor Michael Bloomberg, Republican presidential candidate Donald Trump and Republican vice presidential candidate JD Vance attend a 9/11 memorial ceremony in New York, Sept. 11, 2024. 

People gather at a ceremony marking the 23rd anniversary of the 9/11 terror attacks at the National September 11 Memorial & Museum, in New York, Sept. 11, 2024.

A New York Police Department honor guard holds an American flag during a 9/11 commemoration ceremony at Ground Zero, in New York, Sept. 11, 2024.

Members of the military honor guard place roses on top of the memorial benches at the 9/11 Pentagon Memorial, in Washington, Sept. 11, 2024.

Former New York City Mayor Rudy Giuliani, left, and former New York Gov. George Pataki, right, attend the 9/11 memorial ceremony on the 23rd anniversary of terror attacks, in New York, Sept. 11, 2024.

Sam Pulia, left, police chief in Willow Springs, Illinois, places flags on the bronze parapets at the 9/11 Memorial on the 23rd anniversary of the terror attacks, in New York, Sept. 11, 2024.

A New Jersey police officer holds an American fag before the start of the ceremony at the 9/11 Memorial on the 23rd anniversary of the terror attacks, in New York, Sept. 11, 2024.

Members of the Secret Service and law enforcement officers secure the area during an event marking the 23rd anniversary of the attacks on the United States, near the Flight 93 Memorial in Stoystown, near Shanksville, Pennsylvania, Sept. 11, 2024.

Mercedes Arias stands by the name of her father Joseph Amatuccio on the south pool during the 9/11 memorial ceremony on the 23rd anniversary of the attacks, in New York, Sept. 11, 2024.

A flag hangs from the top of the Pentagon during a dawn 9/11 remembrance ceremony in Washington, Sept. 11, 2024.