Engineers present further arguments that World Trade Center 7 could not have collapsed as it did without inside help, and that the official investigation skipped over that part of the issue.

I don't have the expertise needed to reach any conclusion about this. I can't judge the arguments of the various sides. The only conclusion that I can reach is that we should have a full, complete and honest investigation of what caused the World Trade Center towers to collapse.

One thing we can be sure of is that the actual investigation was corrupt. One of the members quit and said so.