A quick note before we start.
This episode includes sounds of shootings from a college campus.
It also features music with violent and explicit language.
If you're listening with small kids, you may want to save this one for later.
This is hidden brain.
I'm Shankar Vedantu.
On a chilly April morning in 2007, a nightmare unfolded on a college campus in Virginia.
A 23 year old student, acting alone, opened fire in a dormitory.
He shot and killed two students.
Then he walked across campus and began killing people in an engineering building.
The sound of gunfire was caught on a student's cell phone.
We weren't sure what it was.
It was gunshots.
But for a while, we thought it might have been construction.
We heard this horrible scream and laughter.
Tina Harrison was a student in the building.
So we were sitting in the classroom and basically panic broke out.
All we could hear was people screaming, laughter and more screaming.
And I counted 24 gunshots within a minute, and I lost track.
After that, I just started praying.