PoetryHound, I'm sorry, I don't think I communicated effectively.  The American Society of Civil Engineers are not law enforcement officers.  As civilians they can be controlled vis a vis access to a crime scene.  A BATF agent or FBI agent cannot be restricted in the same way.  Did BATF or the FBI rule out the use of explosives?  If so, that report should be made public to rule out any conspiracy theories, don't you think?  Scholars for 9/11 Truth & Justice: stj911 dot com