Exposing Falsehoods and Revealing Truths
Planes without Passengers, the 2nd edition takes from the first edition the proven theory that no hijackings took place on 9/11 and goes further by concluding that the passengers were really agents who assisted with the plot.
The book's conclusions are based primarily upon two facts: (1) the Bureau of Transportation Statistics (BTS), which maintains information on all commercial flights in the United States, in its original form, stated clearly that while United 175 and United 93 were scheduled to fly and flew on 9/11/01, American 11 and American 77 were not scheduled and did not fly and (2) ACARS, a system much like electronic mail and GPS, shows that United 175 and United 93 were flying over the Midwestern part of the United States long after their supposed "crashes" on the east coast.
Agents pretending to be passengers were seen at the Cleveland Hopkins Airport late that morning. They walked toward A NASA building to make calls to the media to straighten out an impression many had that the Internet reported that United 93 had landed in Cleveland.