Presentation by Dwain Deets on September 10, 2011 in Ventura, California. Event was in the Topping Room at the E.P. Foster Library. A systematic approach was applied to the perplexing destruction of the World Trade Center on September 11, 2001, from the standpoint of several candidate technology sets (e.g., theories). These included the official explanation (fire and gravity), pyrotechnics and explosives, directed free energy, and nuclear devices. Q&A is posted separately.