At an off-campus coffee shop Monday, Ohio State University senior Mohamed Farah catches up on his homework.

"I didn't get a lot of work done today just because there's a lot going on," he says. "I tried to stay away from the news, but I kept going back to it."

Farah first learned of an attack on campus when security sent a text to the entire university: "Active shooter on campus: Run Hide Fight."

But the attacker did not use a firearm. According to police, he drove a car into pedestrians, then got out and attacked people with a butcher knife. Eleven people were injured before police shot and killed the suspect.

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