Heroine?

So, I may have saved a man's life tonight. Working the second job, and one of my last tables was a father and son. After they got their meals, I realized the father was coughing non-stop for a bit and making some pretty horrendous noises. His son didn't seem too concerned, but I brought him over a glass of water, just to show that I noticed his discomfort. Later, much later, after he finally caught his breath, he thanked me profusely for my foresight. No biggie homes, just looking out. All in all kinda scary, but he was making noise the whole time, which is the sign that he's getting some oxygen in. Shook my hand when he left and thanked me again. I mean really, what else would you do in that situation?