Part 3/9:
An intriguing aspect covered includes testimony from David Biglia, an interviewed individual who stated that two airplanes were broadcasting ELTs on September 11. He asserted that ELTs can be set off manually but primarily trigger as a result of crashes. The speaker acknowledges this statement's contradictions, noting the complexities in determining the exact origin of an ELT signal, especially given that an ELT might broadcast from high altitudes, which could dissipate sound waves over distances.