On September 11, 2001, life in the United States was brought to a standstill.
At 8:46 that morning, a passenger jet crashed into one of the Twin Towers in New York City. The silver skyscrapers were part of the World Trade Center, a huge office complex where about 50,000 people worked. The towers were a symbol of the nation’s wealth and strength.
As smoke poured out of the North Tower, witnesses thought the crash must have been an accident. But 17 minutes later, at 9:03 a.m., a second plane slammed into the South Tower.
It was suddenly clear: The U.S. was under attack. Terrorists had seized the planes, turning them into deadly weapons. Thousands of people fled the burning towers as rescue workers raced to the scene.