"Directed Energy Weapons" refer to any number of types of unconventional and exotic weaponry.
The full range of these weapons is classified information, so no attempts will be made to distinguish between categories within the realm of energy weapons, as doing so would imply specific knowledge of all that are available.
In addition, no claim is be made about whether the directed energy weapon operates from a space-, air-, or ground-based platform, nor are any claims made about whether or not it involves sound waves, antimatter weapons, scalar weapons, a facility like HAARP, etc.
However, the evidence appears consistent with the use of energy weapons that go well beyond the capabilities of conventional explosives.
Wikipedia article on Directed-Energy Weapons
Although speculation about DEWs on 9/11 began shortly after the event, one of the first scientists with relevant credentials to publicly propose the DEW hypothesis was Dr. Judy Wood, a former professor of mechanical engineering.
The following material is largely from her book Where Did the Towers Go?, as well as from her old and new websites.
Where Did the Towers Go?
I. 9/11 Enigmas
II. New Nomenclature
The amount of matter contained in the buildings would've destroyed the "bathtub" of NY and flooded Manhattan if they were brought down with conventional explosives.
The other MAJOR problem with your theory is the seismic record of that day. It was NOT NEARLY "large/loud" enough for the size of those buildings.
Something "removed" the matter of those buildings.
I spell it out pretty specifically in this thread if you take the time to look.
Not your typical "conventional explosives." Nano-thermite explosives were used by the CIA to bring those towers down by acting like a cutting torch through that steel in structural locations. The core was collapsed first and then the core pulled down the sides of the building. 3/4 inch steel plate steel is extremely strong and takes extreme temperatures to cut through it. Jet fuel fire is not going to do it. During the asbestos abatement program when the the towers were shut down is when the explosives were placed. WTC 7
Honest question: Why did they hire a proven government spook like Steven Jones to push the thermite theory? Are they trying to discredit it by using a glowie?