When you grasp the WHY of 911 you will have less emotional resistance to discovering who murdered over 3,000 of our citizens. The late Aaron Russo's documentary videos offer a broad theory of the WHY. They need to be seen, although it seems unrealistic that a controlling oligarchy would risk employing technical expertise to execute 911. A more plausible theory, starting from CUI BONO, (Who Benefits? - the Latin starting argument in determining guilt) was propounded at the end of 2003 by Professor Paul J. Balles. Motive and benefit may be shared by both the guilty and the innocent. To accomplish as sophisticated an event as 911 requires means and opportunity, as well as motive (benefit).