Here are two news stories with info on the police response:
http://www.cincinnati.com/story/news/loc.../94723764/
As a student safety officer, Alan Horujko trained for active shooter situations with OSU police and the U.S. Department of Homeland Security. Such drills became a regular part of campus policing after the Virginia Tech shooting in April 2007.
http://www.torontosun.com/2016/11/29/isr...own-expert
Aaron Cohen, a former Israeli special forces soldier, is an American counter-terrorism consultant who has trained U.S. military, police, and SWAT teams in confronting such threats. He says Alan Horujko, the Ohio State University cop who shot and killed a knife-wielding man on Monday, used Israeli-based tactics to “neutralize” the threat.
He initiated a single-officer response, which is rare for U.S. law enforcement. Patrol will typically wait for two, three more officers to show up before making entry into such a situation. The Israeli model doesn’t allow for that. There is no time. He was able to get directly to the threat via sprinting. The philosophy is: For every second you waste, another innocent person is killed. They engage using a point-shooting method, just focusing on the front end of the weapon. In short distances, where terrorism occurs in crowded areas, it allows you to get on target very quickly. Then there is the neutralizing head-shot to keep the threat’s hands from moving. This officer still fired three, four shots to the body, but if the attacker is still a threat, we sprint up to the threat to fire a shot into the head.
Going through the mind of this particular officer would be the protocol he was taught via the Israeli model, which is based on a counter-terror response doctrine he had been walked through over several days. He has already been put through the paces of responding alone, with a combat philosophy designed for terrorism: Spot all the threats immediately, neutralize all of the threats immediately, and then continue sweeping and looking for more threats. Also, speed. I don’t have time to wait. If I wait and I don’t take action, and deploy aggression as an actual tactic, more innocent life will be lost.