Many suspects were never investigated by the 9/11 Commission
with the Means, Motive, and Opportunity

Ace Elevator Company

All the signs of a "front" company
With no experience, go contract away from huge Otis Elevator in 1994
90% of its business came from the World Trade Center
Went bankrupt and disappeared after 9/11

World Trade Center Building 7

Never covered, not hit by a plane, yet completely collapsed around 5:20 pm

Remote Control Technology for Hijack Proof Boeing 757 and 767's

A plane taken over by remote control looks like a plane taken over by hijackers

Larry Silverstein

The primary financial beneficiary of 9/11.
Took out a $7 billion insurance policy just weeks before 9/11

Larry, son Roger, and daughter Lisa were not in their breakfast meeting
at the restaurant atop WTC 1, or their office on the 88th floor.
Basic body language and perception:  Look at Larry immediately look away then down, then shake his head "no" 
Charlie Rose: "Where were you on 9/11"?
Larry: "Um... you know... uh.. I was...home.. uhh.. and... I..."

Lucky Larry Silverstein

America  needs Independent Police Investigators to Investigate 9/11

Unfortunately the FBI has not answered the questions of the public.
They report to the White House which includes potential suspects in the crime