article_snippet.sent: I assumed it had to be the shooter, from his stance ...
article_snippet.sent: his was walking around, and I can see his pointing the gun in a circular motion that looked like his was searching for more people ...
article_snippet.sent: My thought process was that his was searching for other people and that his was going to start going row by row, and that anybody his would see in that row who was still moving, his would shoot.'
article_snippet.sent: his described the shooter firing three-round bursts.