Mark Sauter, investigative historian, and John Zimmerlee, POW case expert: The latter's involvement with POW/MIA issues started with the 1952 disappearance of his father, Air Force officer John Henry Zimmerlee, during the Korean War. Years later, frustrated at the government's failure to declassify and correlate huge numbers of files in the National Archives and other locations, Zimmerlee took it upon himself as a volunteer, analyzing more than 100,000 pages and creating a unique database of Korean War cases. It includes everything from debriefings of returned Americans to interrogations of ca...