Retired Navy Admiral Harold W. "Hal" Gehman Jr., chairman of the Columbia Accident Investigation Board, and board member Dr. John Logsdon, director of the Space Policy Institute, George Washington University, listen to expert information about the role of the Kennedy Space Center in the Shuttle Program, Shuttle Safety and Debris Collection, Layout and Analysis and Forensic Metallurgy. This was the third public hearing of the board, which was held in Cape Canaveral, Fla.