Personally I don't think it was a direct energy weapon, unless you consider a 4th generation nuke as an energy weapon.

I am very much in the camp of 4th generational directional nuclear weapons which have a much small radiation foot print.

I suspect a 4th generation directional bomb pointing up towards the core of the building is what we witnessed. The buildings collapsed and were vaporized from within, not from above.

I guess if you put a direct energy weapon inside the base of the building you could pull this off as well, but the amount of energy required would be insane. A directional small nuke would be a lot easier and have a similar effect.

Personally I don't think it was a direct energy weapon.

I am very much in the camp of 4th generational directional nuclear weapons which have a much small radiation foot print.

I suspect a 4th generation directional bomb pointing up towards the core of the building is what we witnessed. The buildings collapsed and were vaporized from within, not from above.

I guess if you put a direct energy weapon inside the base of the building you could pull this off as well, but the amount of energy required would be insane. A directional small nuke would be a lot easier and have a similar effect.