Father Andrew W. Greeley tells the story: Once upon a time a young man, who had been reported kill in action, came home from a prisoner of war camp. His family and his buddies and even his girl friend had mourned him as dead and then more or less got over their grief. His sudden reappearance was disconcerting to say the least. They had all loved him, but they had in effect written him out of their lives. His girl friend was engaged to marry someone else. M…