It was the beginning of this year when anti-gunners were saying how ridiculous of an idea it was to have more armed good guys in schools in order to prevent shootings.

However, on Friday, in Centennial, CO, just a 15 minute drive from both Columbine and Aurora (what the hell is going on in that tiny area of the country anyway?!), a good guy with a gun did just what the anti-gunners said was impossible.

According to the most recent reports about the attempted Arapahoe High School shooting, an armed resource officer at the school most likely caused Karl Pierson to take his own life before he could take anyone else’s.

According to CNN,

The rampage might have resulted in many more casualties had it not been for the quick response of a deputy sheriff who was working as a school resource officer at the school, Robinson said. Once he learned of the threat, he ran — accompanied by an unarmed school security officer and two administrators — from the cafeteria to the library, Robinson said. “It’s a fairly long hallway, but the deputy sheriff got there very quickly.” The deputy was yelling for people to get down and identified himself as a county deputy sheriff, Robinson said. “We know for a fact that the shooter knew that the deputy was in the immediate area and, while the deputy was containing the shooter, the shooter took his own life.” He praised the deputy’s response as “a critical element to the shooter’s decision” to kill himself, and lauded his response to hearing gunshots. “He went to the thunder,” he said. “He heard the noise of gunshot and, when many would run away from it, he ran toward it to make other people safe.”

There you go. The only reason that this didn’t turn into a mass shooting was the presence of a good guy with a gun on the scene when the incident started.

Claire Esther Davis, a 17 year old senior, was the lone victim of the shooting. She remains in critical condition at an area hospital suffering from a gunshot wound to the head.