Scholars Call for Release of 9/11 Information

5. Audio tapes of interviews with air traffic controllers on-duty on 9/11 were intentionally destroyed by crushing the cassette by hand, cutting the tape into little pieces, and then dropping the pieces in different trash cans around the building. We demand an explanation for this destruction of evidence and ask that the possible existence of other copies of such tapes or perhaps of written transcripts of the interviews be pursued. All air traffic controllers on-duty on 9/11 should be allowed to testify during a public forum under oath.

See, for example:

F.A.A. Official Scrapped Tape of 9/11 Controllers' Statements

FAA Managers Destroyed 9/11 Tape

9/11 air traffic controller statements destroyed

Controllers' 9/11 Tape Destroyed, Report Says

Tape of 9/11 air traffic controllers destroyed

Also read, from:

Intersecting Facts and Theories on 9/11 . Joseph P. Firmage http://firmage.org 2006-08-08

21 Third large airplane in restricted airspace over Manhattan during attacks

Commercial jets are prohibited from flying at low altitudes around the borough of Manhattan. Of course, two planes violated that rule on 9/11 to tragic effect. However video, photographic and eyewitness testimony has clearly placed a third commercial-size jet aircraft circling at low altitude while the first tower is burning and continuing as the second tower is struck. No such plane is mentioned in the 9/11 Commission report or in any official investigation. If it was a commercial jet, it was flying illegally, its pilot was taking risks flying close to billowing clouds of smoke and was presenting an obvious target for the fighters that would arrive too late. It is not plausible that this third plane was a commercial passenger flight.

The complicity theories resolve the mystery of the third aircraft: it was most likely involved in the operation, perhaps providing observational data and/or offering a flying platform nearby to manage part of the attack – a platform that could get in and get out quickly and relatively discreetly. It would also explain Bush’s statement that he saw the first plane strike the WTC before the rest of the world could have [Editor's Note: Read comments on it].

Note that the author of the article revealing the third plane claims that he has received threats against himself and his family for having written the article (referenced below). The author reported that the source of these threats suggested that he drop out of the 9/11 research project and that his article should "go away".
See:
Scholars for 9/11 Truth, The Flying Elephant: Evidence for Involvement of a Third Jet in the WTC Attacks, Journal of 9/11 Studies, vol. 1:26-39. Available at: http://www.journalof911studies.com

To voice their indignation, Scholars For Truth are asking as many readers as possible to sign their petition:
http://www.thepetitionsite.com/takeaction/929981172?ltl=1141667399
The original of it can be found in their website as well as linked through the living article of Dr. Steven E. Jones:
Why Indeed Did the WTC Buildings Collapse?
Who participated in the American Scholars Symposium organized by Alex Jones (see a collage of Alex Jones videoclips here):

"Steve Jones has now tested steel samples from two different sites that both clearly show the use of thermate as a tool of implosion and the analysis has been verified by two other Universities."