David and I had been married 5 years when we moved to Louisville, KY, for David to teach at Highview Baptist School. Zachary was 7 months old. It soon became our custom to walk the sidewalks of our neighborhood, Ashbrooke Gardens, after dinner. Zach was as happy-as-a-clam in his stroller and it gave David and me an opportunity to catch up on our day. He was a rookie in his teaching career and had the stories of the day to prove it. I was at home with Zachary, and was always anxious to share the newest milestone or development that he had achieved. Three years later when Samuel joined our family, we were still walking and talking each evening after dinner. And three years after that, when Seth joined Team Balty, we were still walking together. Over the years things changed of course; Zach outgrew the stroller, then rode a bike, and then drove a battery operated truck. As soon as Samuel could hang on tightly enough, he was not content to be in the stroller either and h...