Every parent's nightmare.  What great fortune that his mother knew CPR; a lesson to us all.
He's got good TK bloodlines; I've got great faith he'll be fine.  Something quite similar happened to me when I was just a couple of years older, and hey, I'm fine!  Hang in there, TK, give the family all of our best wishes.  The kid is going to need you to show him a good time when he gets older, because his parents are going to place some pretty severe restrictions on him henceforth, I suspect.
- oldman