It was a Tuesday morning when American Airlines Flight 11 and United Airlines Flight 175 crashed into the twin towers. Flight 11 crashed into the North Tower at 8:46 am and Flight 175 hit the South Tower 17 minutes later.

The Boeing 767 that crashed into the north tower was loaded with 20,000 gallons of jet fuel. The impact, which killed several hundred people instantly, left a gaping hole near the 80th floor of the tower, which was 110-story tall. On 9:03, another Boeing 767 appeared out of the sky and took a sharp turn towards the South Tower, crashing near the 60th floor.