Problem number 1,239 for the Twoof movement.
Many things in an office fire go BOOM. here is a short list. BTW, I have fought fire in highrise buildings where I have personally witnessed these things going boom.
Water heaters
computer monitors
televisions
HVAC equipment
elevator cables snapping at their failure point, and subsequent elevator falling to the basement
electrical transformers
Etc. etc. etc.
ALL of these are QUITE numerous in the WTC. Could it be possible that any one, or a combination of these could have made up the booms that WERE heard?? I bet so. But, the very LEAST possibility is explosives like RDX or C-4. These are the LEAST likely things to be found in WTC.
Now, based on the evidence that I have presented to you, which do you find more LIKELY?? Oh, nevermind, you're a twoofer. Always the LEAST likely canidate.