Only those of us who dealt with Gary Mack personally, would know the type of person he was.
Many of us knew him as a snake in the grass--and not because of his "about face". We had personal experiences with him long before the Sixth Floor Museum came into existence. If I may make a suggestion, please read the chapter titled "The Investigations" , available on the CD-Rom in Reclaiming History. Flip to the title "Acoustics", and please read what actually happened with Gary when the conclusions of the HSCA were challenged (the acoustics tests). As you know, Gary was the person who received the credit for the Dallas police Dictabelt recording being brought to the attention of the HSCA and that it contained gunshots. Well, it's all in within the chapter and it's not pretty. Few--if any of you--know what went on behind the scenes, but you can find out the facts as they happened by reading the chapter in Reclaiming History.