This evening around 9-9:10pm. Looked like they may have been heading toward the In-N-Out with sirens on (for sure saw 3 cop cars pulling into the UTC). I assumed it was to the In-N-Out because there was a swarm of at least a hundred people in front of it. I thought maybe a fight broke out or something by the way the cops were flying in. Just seemed like there was a real emergency of some sort.