I’d like to know who they are

I’m sure you’ve already heard about the shootingin a Tennessee church:  a lone gunman walked in during a children’s production of Annie and began shooting.  The shooting, however, did not end with a lengthy stand-off.  Instead, “Two congregants tackled the gunman.”  Wouldn’t you like to know more about those two?  I would.

I know that they’re the same kind of people who kept United Flight 93 from turning into another building-bomb.  I know they’re the same people who leap in front of subway trains to rescue someone who has fallen onto the tracks.  I know they’re the same type of people who fall onto grenades.  And every time I read about people like this, I wonder who are they?  What special thing do they have inside of them that enables them to display such selfish heroism?