WTC Building #7, a 47-story high-rise not hit by an airplane, exhibited all the characteristics of classic controlled demolition with explosives:

In the aftermath of WTC7's destruction, strong evidence of demolition using incendiary devices was discovered:

FEMA finds rapid oxidation and intergranular melting Several tons of molten metal Chemical signature of the incendiary thermite

WTC7 exhibited none of the characteristics of destruction by fire: