This is the kind of thing people do in civilized soceities.
Frankly that is all any reasonable person is looking for:
To do the right thing when it can make a difference, even when it might be easier and safer to just stay quiet or do nothing.
If only all of life's choices were as easy as deciding to stop a raving arsonist.
But that was his chalenge, and he rose to the occasion and did the right thing.
Ed