Planes loaded with something. I did not write explosives. And therein is part of the problem discussing the anomolies, people inject what they carry as baggage regarding what they have believed. There are loads of data points you will never even look at because you have already reach the conclusion you ‘feel’ comfy with. The Physics of the towers coming down do not fit the great lie we have been fed. How they were brought down I have not addressed, just building seven.
Operation Northwoods, IIRC, was the explosives laden plane plot. What was in the planes that hit the towers I do not know.
The structure did not have to melt, just to soften, for the result seen. No insulation on the steel.