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(CNN) – Gunshots rattled a packed Florida State University library early Thursday, with three people getting hurt as hundreds of students huddled between bookshelves before police encountered and killed the gunman outside.
Blair Stokes, a senior at Florida State University, was huddled on the fourth floor of the library, when the shooting happened. She scanned the stacks, looking for the biggest book, hoping it would protect her if the shooter made it the fourth floor. She evaluated her laptop, wondering if it could possibly shield her.
"And then there was a point where I was like, if these things can't protect me, then I might as well make sure people know what happened," Stokes said in an interview with CNN's "The Lead with Jake Tapper."
That's when she started sending chilling messages out on Twitter as the event unfolded:
"Guy at library with gun wtf."
"Cannot believe any of this. It's stuff u see on tv. At other schools. But it's here now."
"I thought I was going to die tonight."
Hours later, she tweeted a photo of herself, telling everyone she was home, and safe.
"Twitter is my main source for things that are happening immediately. I saw nothing on Strozier (Library), so I decided to break the news that I saw unfolding," Stokes said.
For more of our interview with FSU shooting witness Blair Stokes, check out the video above.