Infowars.com currently has a YouTube video of an interview Kevin Ryan did for Resistance Radio Network in which he discusses who had access to WTC buildings, who was responsible for the complex's security, and who had demolition capabilities. http://www.infowars.com/911-truth-kevin-ryan-exposes-access-for-demolition-crews-to-wtc-buildings/
During the interview Kevin talks about SAIC's involvement with the intelligence community, its connections to key players in government and the company's work with nano-thermite. For more details on the subject, read Kevin's article at 911Blogger.com, "Carlyle, Kissinger, SAIC and Halliburton: A 9/11 Convergence." http://911blogger.com/node/22120