Remembering September 11th: Flash Back To Images We Will Never Forget

The U.S. landmark, Twin Towers, was part of the World Trade Center which opened on April 4, 1973.

As news broke of the catastrophic incident at Twin Towers in NYC, the majority of the news and media dubbed it a fluke. An attack was not apparent until the second plane hit the South tower.

The 43rd U.S. President received news of the second attack while reading along with schoolchildren in a classroom in Florida.

At 9:59 am, the South Tower collapsed less than an hour after being hit by the second hijacked airliner. At 10:28 am, the North Tower collapsed.

An unidentified firefighter breaks down as rubble, debris, and blood fill the streets of New York City.

NYC Police officer stands completely stunned as the fire engulfs what remains of the North Tower.

People all over the world stood stunned when news of the attack on American soil made headlines.

Three New York City firefighters raise the American flag at Ground Zero of the World Trade Center, following the September 11 attack.

James Taormina visits the 9/11 Memorial in New York City to pay respect to his brother, Dennis, who was killed in the 9/11 attack.

Bernadette Ortiz holds daughter, Adriana, as they look for the name of Bernadette's grandfather, New York City Police Officer Edwin Ortiz. The wall commemorates fallen officers in New York City.

An unidentified man pauses to pay his respects at the North pool before the commemoration ceremony.

A temporary memorial adorns the fence on the 16th anniversary at the World Trade Center 9/11 Memorial.