Support a new investigation, and you might get the answers you seek.
Why? I am knowledgeable enough to know what it takes to prepare a tall steel frame building for demolition and I knew that it was not possible to properly prepare the WTC buildings with explosives in secret in order to bring them down.
Many months of structural pre-weakening would have been required even before the first cutter charges and explosives are attached to the steel columns. As I'd mentioned before, I could have placed 1 ton of explosives on each floor level of the WTC buildings and detonate the explosives all at once, the result would have been blown windows and walls, but their steel structures would have remained intact.
After structural pre-weakening is completed, explosives must be FIRMLY attached to steel columns in order for explosives to be effective and when detonated, the explosions would send shock signals through the steel columns and into the ground where the signals will be detected by seismic monitors, but as the seismic data proved, no such shock signals were detected as WTC 1, WTC 2 and WTC 7 collapsed.
Let's look at it this way, you strike a steel beam with extreme force with a steel hammer at one end of a steel beam and person #2 is listening for that distinctive sound at the other end of the steel beam. If person #2 does not hear a sound, it simply means that you did not strike the steel beam with extreme force. In other words, no evidence that you struck the steel beam with extreme force.
If structural pre-weakening is not properly performed on a steel building and explosives are not firmly attached to structural steel, this will be the result.
https://www.indybay.org/uploads/2004/03/04/bombedbuilding.jpg
http://www.jadaliyya.com/content_images/3/Aftermathpic1.jpg
To sum it up, seismic monitors did not detect the tell-tale CD shock signals as WTC 1, WTC 2 and WTC 7 collapsed, which is proof that the collapse of those buildings was not the result of explosives.
I want to add that no new investigation is warranted, but that is just my opinion.