For the most part, there was nothing particularly unusual about Jean Potter's life. Going right to work after graduating from high school, she spent most of her career as an executive assistant in several large New York-based companies. In fact, she was working for the managing director of Bank of America in its offices on the eighty-first floor of the North Tower of the World Trade Center on September 11, 2001. By the Grace of God is Jean's story-from...