"Seven years of training led up to that moment. How to react had been drilled into me. And still, I was caught so off guard by the attack that my reflexes had failed initially. It was nearly fatal.
I wasn’t perfect that night, but my years of training — our years of training, in the military — helped get us through the moment. Without it, the situation wouldn’t have been survivable...
In speaking Wednesday, the President said, “If the coach had a firearm in his locker when he ran at this guy ... he would have shot and that would be the end of it.”
Unfortunately you just can’t make that assumption. It’s not as easy as it looks on TV.
There were armed guards at Columbine, the Pulse nightclub and in Las Vegas at the time of the massacre. At Parkland too. Time and again, armed civilians or security guards are out-maneuvered, out-gunned and too inexperienced. It’s difficult for a rational person to reach a state where they can go toe-to-toe with an armed psychopath who has nothing to lose. I was professionally trained and still almost blew it at the moment of truth."
http://www.nydailynews.com/amp/opinion/arming-teachers-classroom-cost-kids-lives-article-1.3835411