Michael Hargrove tells about a scene at an airport that literally changed his life. He was picking up a friend.  He noticed a man coming toward him carrying two light bags. The man stopped right next to Hargrove to greet his family.  The man motioned to his youngest son (maybe six years old) as he laid down his bags. They hugged and Hargrove heard the father say, "It's so good to see you, son. I missed you so much!"  "Me, too, Dad!" said the son.  The oldest son (maybe nine or ten) was next. "You…