How dangerous is an individual Special Forces soldier? - Quora

Well, it may or may not be true, but it's a good story regardless. Touches on all the right heart strings - Old out of shape gentleman threatened by two 'young punks' and he reluctantly has to show them they bit off more than they could chew.
- The older gentleman remorseful of his actions because after repeatedly warning them (which were ignored) he had to reluctantly and efficiently takes action to their detriment.

Again, good story regardless of its veracity.