Deborah H. Butler, 63, retired in October 2015 as the executive vice president of planning and chief information officer of Norfolk Southern Corporation (“Norfolk Southern”), which is engaged in the rail transportation of raw materials, intermediate products and finished goods. Butler joined Norfolk Southern in 1978 and served in positions of increasing responsibility in operations until being named assistant vice president transportation customer service in 2000 and vice president customer services in 2002, a position she held until her appointment as executive vice president in 2007. She has been a director of CMS Energy and Consumers Energy since January 2015. Butler previously served as chairman of the board of Thoroughbred Technology and Telecommunications, LLC, a Norfolk Southern subsidiary, and previously served as a board member of TTX Company, Inc., which provides railcars and related freight car management services to the North American rail industry.