Controlled demolitions during 9-11 of World Trade Center Towers 1, 2, and 7 show that a demolition team, not located on the planes which collided with the towers, installed the demolitions and explosive squibs.
An analysis of the squibs forms a statistical pattern, consistent with an explosive signature. It's unclear whether the NSA or FBI reviewed this signature when identifying communications or records connected with potential handlers of this class of explosives.
An FBI Law Enforcement Bulletin (LEB) shows before 9-11, twenty percent of the "known hijackers" had contacts with law enforcement in the months before 9-11.
It stands to reason there are similar law enforcement and communication records connected with the demolition team members. It remains unclear whether the 9-11 Commission reviewed, requested, or was denied any records related to any demolition team members, plans, or equipment.
It remains unclear which NSA selector sheets exist related to a 9-11 demolition team, and what review, if any, the FBI Directorate of Intelligence or National Security Branch made of records related to this demolition team.
Diary outlines basis for conclusions, and recommends a method to analyze traffic patterns and communications to identify the time when the demolition team placed explosives and coordinated their pre- and post-incident coordination.
A. Basement demolitions aren't adequately addressed: Should be some law enforcement analysis of those pre-incident-related events. Where are they?
B. See (below): [ Update: Responses Inadequately Addressing Law Enforcement (Communications, Records) Evidence ] for other comments.
C. It's important to consider this view; and that DailyKos is a forum to improve oversight of government. This diary hopes to contribute to that governance goal.
D. Another view, Fireproofing sprayed.
F. Thanks to out of left field for your (helpful, constructive, thought provoking) comments: In re this comment, Article on NYC structural renovations; and views of engineers on controlled demolition.