PHOTOS: Remembering the Sept. 11 terror attacks, 19 years later

Americans are remembering the terror attacks of Sept. 11, 2001, which claimed 3,000 lives when hijacked planes slammed into the World Trade Center, the Pentagon and a field near Shanksville, Pennsylvania.

Nineteen years after the deadliest terrorist attack on American soil, the nation is still grappling with the aftermath of that day.

On Friday, Americans are commemorating 9/11 with tributes that have been altered by coronavirus precautions and woven into the 2020 presidential campaigns.

The Associated Press contributed to this report.

A large American flag is unfurled at the Pentagon ahead of ceremonies at the National 9/11 Pentagon Memorial to honor the 184 people killed in the 2001 terrorist attack on the Pentagon, in Washington, Friday Sept. 11, 2020. (AP Photo/J. Scott Applewhite)

President Donald Trump and first lady Melania Trump pause for a moment of silence on Air Force One as he arrives at the airport in Johnstown, Pa., on his way to speak at the Flight 93 National Memorial, Friday, Sept. 11, 2020, in Shanksville, Pa. (AP Photo/Alex Brandon)

Democratic presidential candidate and former Vice President Joe Biden walks Sen. Chuck Schumer, D-N.Y., right, and New York Gov. Andrew Cuomo, at the National September 11 Memorial in New York, Friday, Sept. 11, 2020, before a ceremony marking the 19th anniversary of the Sept. 11 terrorist attacks. (AP Photo/Patrick Semansky)

Democratic presidential candidate former Vice President Joe Biden greets Vice President Mike Pence at the 19th anniversary ceremony in observance of the Sept. 11 terrorist attacks at the National September 11 Memorial & Museum in New York, on Friday, Sept. 11, 2020. (Amr Alfiky/The New York Times via AP, Pool)

5/19

From left, New York Gov. Andrew Cuomo, Democratic presidential candidate and former Vice President Joe Biden, former New York Mayor Mike Bloomberg, and Vice President Mike Pence stand during the national anthem at the National September 11 Memorial and Museum, Friday, Sept. 11, 2020, in New York. Americans will commemorate 9/11 with tributes that have been altered by coronavirus precautions and woven into the presidential campaign. (AP Photo/John Minchillo)

Lorna O’Hara holds a poster of her cousin, Brian Bilcher, a New York City firefighter who died on Sept. 11, 2001, during the attacks at the World Trade Center, before a ceremony organized by the Tunnel to Towers Foundation, Friday, Sept. 11 2020, in New York. The names of nearly 3,000 victims of the Sept. 11, 2001 terror attacks are being read by family members. (AP Photo/Mark Lennihan)

Diane Massaroli holds flowers flags and photo of her husband Michael Massaroli who died during the Sept. 11, 2001 attacks at the World Trade Center, before a ceremony organized by the Tunnel to Towers Foundation, in New York. The names of nearly 3,000 victims of the Sept. 11, 2001 terror attacks are being read by family members. (AP Photo/Mark Lennihan)

US Army Sgt. Edwin Morales arrives to place flowers for fallen FDNY firefighter Ruben D. Correa at the National September 11 Memorial and Museum, Friday, Sept. 11, 2020, in New York. The names of nearly 3,000 victims of the Sept. 11, 2001 terror attacks will be read by family members at a ceremony organized by the Tunnel to Towers Foundation, (AP Photo/John Minchillo)

9/19

US Army Sgt. Edwin Morales salutes after placing flowers for fallen FDNY firefighter Ruben D. Correa at the National September 11 Memorial and Museum, Friday, Sept. 11, 2020, in New York. Americans will commemorate 9/11 with tributes that have been altered by coronavirus precautions and woven into the presidential campaign. (AP Photo/John Minchillo)

A woman wearing a flag mask joins others in prayer at the Tunnel to Towers ceremony, Sept. 11, 2020, in New York. Vice President Mike Pence and his wife Karen will attend the ceremony where the names of nearly 3,000 victims of the Sept. 11, 2001 terror attacks will be read by family members. (AP Photo/Mark Lennihan)

Former New York Mayor Rudolph Giuliani, right, accompanied by Bernard Kerik,former New York City police Commissioner, attend the Tunnel to Towers ceremony, Sept. 11, 2020, in New York. Vice President Mike Pence and his wife Karen will attend the ceremony where the names of nearly 3,000 victims of the Sept. 11, 2001 terror attacks will be read by family members. (AP Photo/Mark Lennihan)

A family member gets emotional at the Tunnel to Towers ceremony, Sept. 11, 2020, in New York. Vice President Mike Pence and his wife Karen will attend the ceremony where the names of nearly 3,000 victims of the Sept. 11, 2001 terror attacks will be read by family members. (AP Photo/Mark Lennihan)

13/19

Taps is played during a ceremony at the National 9/11 Pentagon Memorial to honor the 184 people killed in the 2001 terrorist attack on the Pentagon, in Washington, Friday Sept. 11, 2020. (AP Photo/J. Scott Applewhite)

14/19

Defense Secretary Mark Esper speaks during a ceremony at the National 9/11 Pentagon Memorial to honor the 184 people killed in the 2001 terrorist attack on the Pentagon, in Washington, Friday Sept. 11, 2020. (AP Photo/J. Scott Applewhite)

15/19

Vice President Mike Pence visits with firefighters of FDNY Ladder 10 Engine 10 after attending a ceremony marking the 19th anniversary of the 9/11 terrorist attacks at the National September 11 Memorial & Museum, Friday, Sept. 11, 2020, in New York. (AP Photo/Mary Altaffer)

President Donald Trump and first lady Melania Trump arrive for a 19th anniversary observance of the Sept. 11 terror attacks, at the Flight 93 National Memorial in Shanksville, Pa., Friday, Sept. 11, 2020. (AP Photo/Alex Brandon)

President Donald Trump speaks at a 19th anniversary observance of the Sept. 11 terror attacks, at the Flight 93 National Memorial in Shanksville, Pa., Friday, Sept. 11, 2020. (AP Photo/Alex Brandon)

18/19

Mourners pause at the north reflecting pool as flowers are placed in the names of the dead at the National September 11 Memorial and Museum, Friday, Sept. 11, 2020, in New York. Americans are commemorating 9/11 as a new national crisis in the form of the coronavirus pandemic reconfigures and divides anniversary ceremonies and a presidential campaign carves a path through the observances. (AP Photo/John Minchillo)

19/19

A mourner prays over the name cut-out of the deceased Emilio Pete Ortiz at the National September 11 Memorial and Museum, Friday, Sept. 11, 2020, in New York. Americans will commemorate 9/11 with tributes that have been altered by coronavirus precautions and woven into the presidential campaign. (AP Photo/John Minchillo)