I was having a bite with my daughter in the Arby's on Howard the other day, when a man nearby started to choke. It happened quite suddenly. As most of us watched on, struck dumb with panic, a guy walks up behind the poor man, and promptly gives him the Heimlich maneuver. Almost instantly the choker's face shifted from bright red to a much healthier colour. Within seconds he was breathing just fine.
Even though he may have literally just saved a persons life, the guy was pretty casual about the whole thing and just seemed happy he could help.