Let's drill down into that. Can you quote the exact bits of NFPA 921 that you think have been ignored?
N.F.P.A. 921 (2001 Edition) 19.4.8.2.6 – Extremism
It reads:
"Extremism-motivated firesetting is committed to further a social, political, or religious cause. Fires have been used
as a weapon of social protest since revolutions first began. Extremist firesetters may work in groups or as individuals.
Also, due to planning aspects and the selection of their targets, extremist firesetters generally have a great degree of
organization, as reflected in their use of more elaborate ignition or incendiary devices. Subcategories of extremist firesetting
are identified as follows.
(a) Terrorism. The targets set by terrorists may appear to be at random; however, target locations are generally selected with
some degree of political or economic significance. Political targets generally include government offices, newspapers, universities,
political party headquarters, and military or law enforcement installations. Political terrorists may also target diverse properties
such as animal research facilities or abortion clinics. Economic targets may include business offices, distribution facilities of utility
providers, banks, or companies thought to have an adverse impact on the environments. Fires or explosions become a means of creation confusion
fear, or anarchy.
THE TERRORIST MAY INCLUDE FIRE AS BUT ONE OF A VARITETY OF WEAPONS, ALONG WITH EXPLOSIVES, USED IN FURTHERING HIS OR HER GOAL…"
It very clearly states the Terrorist may use explosives along with fire to further their goal.
Obviously, explosives were used in 1993 on this very same complex.
It would seem to be obvious that a true investigation would test for the possibility that
“the terrorist may include explosives to further their goal.”
There is no excuse for refusing to test for explosives.
SUggesting that the top of the building remaining in place for 30 years means that on 9/11 it could not fall
and cause the floors beneath to pancake is just asinine. The building wasn't one "massive" structure, as a cement block.
Even if the floors pancaked the massive central core could not have disintegrated like it did due to fire.