As I believe the identity of the perpetrators to be crucial in understanding the rest of what happened on 9/11, I focus only on this part of the book.
The authors could have analyzed the claims of AK (Alex) Dewdney on this subject. Though they do mention Dewdney on other topics (such as flight by remote control), they say nothing about his experiments in the use of cell phones on airplanes, which he called the "Project Achilles Report." The report shows the difficulty of the use of cell phones on planes, especially at the levels the planes allegedly hijacked were flying at.
Another glaring omission is the conduct of World Trade Center leaseholder Larry Silverstein, whose name does not appear in the book's lengthy index. Silverstein said that he "pulled" Building Seven, a slang term for bringing down a building by explosives. His remarks are often cited by those who believe insiders within our government acted on 9/11 because the building would have had to have been prepared for demolition prior to the event.
The two authors also fail to question why Verizon employee Lisa Jefferson did not record her alleged conversation with alleged Flight 93 passenger Todd Beamer. It was from Jefferson that we heard of the now-famous battle cry "Let's Roll!", which Beamer supposedly told other passengers before attacking the hijackers.
So what is their proof for their theory about the perpetrators?
Take their analysis of what happened at the Pentagon. They tell us about photographs published in the Defense Department's "Pentagon 9/11," which show "some debris" outside the building. But they fail to give any indication as to when the debris, such as mangled metal with the marking "AA" for American Airlines on it, actually arrived.
Anthony Summers has written brilliantly about the JFK assassination and other subjects before. But his failure to confront alternative theories to the official one about 9/11 in an even-handed way disappointed me. I fear that his poor analysis will mislead the debate on the perpetrators.
Dean T. Hartwell
Author of Facts Talk but the Guilty Walk: the 9/11 No Hijacker Theory and Its Indictment of Our Leaders