On the morning of Sept. 11, 2001, the world, watched in shock as the unimaginable unfolded.

At 8:46 a.m., a plane struck the north tower of the World Trade Center.

Just 17 minutes later, a second plane hit the south tower.

The attacks continued when a third plane crashed into the pentagon at 9:37 a.m., and a fourth plane — Flight 93 — went down in Pennsylvania after passengers fought back.

In the aftermath, nearly 3,000 people were killed. Among them were 343 firefighters, 23 New York City police officers and 37 port authority police officers.

RELATED STORY: Americans mark the 24th anniversary of the 9/11 attacks with emotional ceremonies

The attacks reshaped the way we think about national security and foreign policy, and the way Americans live and work.

To honor the occasion, th

See Full Page