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On New Year's Day, it did not take long for Colin Clark to start getting calls about what was happening in New Orleans, that early morning attack on New Year's revelers.

I have a team of researchers that I work alongside of that pretty much are, I guess, what the younger generation

will call extremely online.

And they're in a lot of telegram chat rooms and all the places where the bad guys are.

But I pretty much get a wave of text messages as soon as something terrible happens in the world.

Colin is the director of research at the Sufant Group,

a global security research nonprofit.

I wanted him to go through the images with me.

There are so many cameras in and around Bourbon Street

that you can see what happened, minute by minute.

First, a white truck navigates around police cars, then zooms down the pavement.

First heard these bangs and tires wheeling and looked and saw this truck start to accelerate in a high rate speed.

I looked up at some point and saw that there was a vehicle coming towards us on Bourbon

Street, realized that he had front end damage of his vehicle, and just about as soon as I realized that is when he

sped up and hit everyone that I was standing with.

I think I got hit and my body was just thrown onto the ground.

...