The first time I remember noticing the crossing guard was when he waved to me as I drove my son to school.He 1 me with a puzzle—all because he waved to me like someone does 2 seeing a close friend.A big,ª© 3 smile accompanied his wave.For the next few days I tried to 4 his face to see if I knew him.I didn¬ðt.Perhaps he had 5 me for someone else.By the time I contented myself with the 6 that he and I were strangers,we were greeting each other warmly every morning like old friends.ª¥