Who could gain entry to plant explosives in highly secure buildings like the Twin Towers and World Trade Center Building 7? That question must be answered in a new investigation.This is a canon of crime scene investigators: "Physical evidence cannot be wrong; it cannot perjure itself; it cannot be wholly absent. Only its interpretation can err." (Paul Kirk in Crime Investigation)

Gathering and studying the physical evidence, then, is the crucial first step. The fact that the World Trade Center crime scene was disturbed — with telltale evidence hastily removed and destroyed — has created unique challenges for 9/11 investigators.

Fortunately, additional evidence, including definitive seismic data, hundreds of eyewitness accounts of explosions, the documentation of thermite and nano-thermite incendiaries in the WTC debris, and photographic evidence of molten steel/iron in the towers, in the rubble, and in the WTC dust, fill the gap. All of this impeccable evidence points to the theory of controlled demolition using explosives and incendiaries — a theory that categorically disproves the official story.

But who could gain entry to plant explosives in highly secure buildings like the Twin Towers and World Trade Center Building 7 (WTC 7)? That question must be answered in a real criminal investigation that has subpoena power and the legal authority to offer immunity. Just as in any criminal matter, the suspected perpetrators should be charged, tried, and convicted in a court of law before a valid judgment can be rendered as to their guilt or innocence.

Questions Beyond the Scope of AE911Truth

The technical experts at AE911Truth have performed the important task of gathering and analyzing the scientific evidence that proves, beyond a reasonable doubt, that the Twin Towers and WTC 7 were brought down by explosives. Now that the crime of explosive destruction has been confirmed by our experts, it is the duty of government officials to heed international calls for a real investigation. Until such an inquiry is carried out, the effort to determine the identities of the criminals is limited to those who are willing to conduct the research and construct working theories based on that research.

Whoever destroyed the WTC skyscrapers must have had access to the advanced nano-thermite material that was discovered in the dust samples from Ground Zero.

Many in the 9/11 Truth Movement are convinced that the event was a false flag operation, manufactured by a group composed, at least in part, of elements within the U.S. government. This cabal deflected attention from themselves by holding Middle Eastern Muslims responsible for the catastrophic destruction, stoking the public's fear of these "Islamic terrorists" and turning popular opinion against them. The ultimate goal of the 9/11 perpetrators, many believe, was to generate popular support for wars in various Muslim-dominated countries, with the aim of ensuring U.S. control of perhaps the most geopolitically important region in the world. That agenda required cracking down on public dissent by enacting draconian legislation — the Patriot Act, for example — and issuing executive orders (think of the 2012 National Defense Authorization Act). Both acts were designed to curtail civil liberties and to vastly increase the U.S. defense budget.

Indeed, some maintain that the events of 9/11 could have been perpetrated only by factions within the U.S. government and in the upper echelons of major international corporations, especially in defense-related industries.

Their arguments are based on the fact that these powerful figures had the motive, the access, and the means to carry out the crime. Those who study the written and oral history of U.S. covert operations can point to specific suspects within the U.S. government, the corporate community, and the banking sector — suspects whose documented connections to black ops stretch back over the past several decades. Some of these students of history have attempted to construct plausible scenarios to explain how 9/11 could have taken place without substantial detection or interference from international and domestic security agencies.

By contrast, others, such as renowned linguist and political thinker Noam Chomsky, believe it is highly unlikely that members of the U.S. government would have, or could have, been behind the killing of almost 3,000 innocent people — mostly U.S. citizens. They find it hard to believe American leaders would commit murder and treason on such a scale — and, even if they were capable of such heinous deeds, how their actions could have escaped detection, given that an operation of this complexity would have required a significant number of collaborators, any of whom might have spoken out or confessed.

It is beyond the scope of AE911Truth to speculate on these issues. Moreover, we do not have, nor have we ever had, a political agenda. Our mission is limited to educating professionals, the public, the media, and government officials about the evidence — and to supporting the pursuit of justice.

We anticipate that any sincere search for truth will ultimately uncover who planned and who carried out this crime against not only an entire country in a single day but also, in its aftermath, untold other countries, notably Afghanistan and Iraq. A panel assigned to a real investigation would be empowered to obtain sworn testimony and the release of evidence; it would offer immunity in exchange for such testimony; it would examine all of the evidence and use the scientific method in pursuit of truth.

In the meantime, AE911Truth concentrates on disproving the official story with scientific forensic evidence, eyewitness testimony, and video documentation in order to uncover the crime of the century. We offer in-depth reports and the opinions of our experts on the evidence. AE911Truth also pursues legal action, such as FOIA requests and lawsuits, against agencies such as FEMA and NIST, both to hold them accountable and to create greater opportunities for a real investigation of 9/11.

The scientific fraud perpetrated by NIST is exposed in AE911Truth-produced DVDs like 9/11: Blueprint for Truth and 9/11: Explosive Evidence — Experts Speak Out as well as in our 50-page booklet Beyond Misinformation.

A few other sources of information include:

• David Ray Griffin, a respected researcher and author of 12 books on the subject. Among key topics Griffin has addressed is the question of who had access to the tightly-secured WTC towers.

• Kevin Ryan, another dedicated researcher and writer. Ryan has asked and answered questions about who had access to high-tech nano-thermite composite incendiaries, particles of which were found throughout the WTC dust. He has also examined the Twin Towers' tenants and the companies that were doing construction work on the specific floors that were hit by the planes. In addition, Ryan authored Another 19: Investigating Legitimate 9/11 Suspects, which sheds light on a different group of potential suspects.

We recommend that all seekers of the truth first familiarize themselves with the forensic evidence — evidence documented by AE911Truth and other organizations — and avoid the temptation to jump to conclusions. Mere conjecture always creates a credibility gap and sets up barriers to learning in the minds of those whom are becoming educated on the subject. Sticking to the science of the destruction of the three towers and deflecting all non-scientific questions results in discussions marked by strength, credibility, and resolution. That’s what we are doing, and that’s why nearly 3,000 architects and engineers to date have signed our petition for a real investigation to bring justice to the victims and family members of 9/11.