How many plane hijackings by Buddhist terrorists? NONE!
What does it take to anger a Buddhist? I don’t know, but whoever manages to has got a fight on their hands. A Buddhist monk with gun in hand is one truly angry dude. He didn’t get that way in an instant, unlike the permanently enraged muzzies.
It's even scarier than that. Buddhism teaches to remain free from anger, and do what is dharmic (righteous) with lovingkindness.
So what this monk is saying is recognize the threat, recognize the solution, remain perfectly calm, gaze with lovingkindess upon the target, and fire.