911blogger.com

In a letter signed by Michael J. Heimbach, Assistant Director of the Federal Bureau of Investigation’s (FBI) Counterterrorism Division, National Security Branch, it is claimed that a hypothesis regarding exclusive GPS guided autopilot control of the four aircraft destroyed during the terrorist attacks of September 11, 2001 is under review. The FBI notice is in response to receipt of a twenty page thesis describing the aircraft attacks of September 11, 2001 being potentially within the capability solely of autopilot and navigation systems of American Airlines and United Airlines Boeing 757 and 767 aircraft and upgraded Global Positioning System (GPS) technology circa 2001.

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