It has been two years since Zachary's Fontan surgery and he has grown into a healthy, happy little boy. Still, we are reminded the reality of his condition from time to time, and recently we have starting talking to Zachy about his special little heart. This morning he had his annual cardiology checkup way too early to be up and at it, so we slipped some clothes over his sleepy head and had him buckled into his carseat by 7:15. He snoozed soundly on our way across town, and when we got to the doctor's office I unstrapped my little dreamer and plopped him over my shoulder. When we got in the building, he woke up, and still a little dazed he asked, "Where are we, Mommy?" My big boy was getting heavy, so seeing that he was now awake enough to carry his own weight, I set him down, took his little hand, and explained, "We're going to see your heart doctor today." "Mommy," he asked, very bravely and matter-of-factly, "Will they open my che...