In 2001, the world was shook by one of the most disastrous things to ever happen to America.
On September 11th, two planes were flown into the World Trade Center, causing devastation and destruction. It is still known as the worst terrorist attack to ever happen in the U.S.
Since then many conspiracy theories have come forward, along with footage of the attacks - all of which are equaling chilling.
One of those videos, filmed by Caroline Dries from her NYU dorm, outlines the sheer panic and scariness of the event.
The video began trending again on Reddit yesterday and shows how terrified Caroline and her flat mates were when the second plane flew into the south tower, and they realised it was a terrorist attack.
The video is just as horrific as it was 15 years ago, on that day that shook the world.
The video went on to become an important part of the documenting of the attacks, and appeared on a CNN documentary.
Topics: 9/11, World Trade Center