Are you one of the people who say gravity provided all this energy?
Yes. Gravity providet a lot of energy. For each tower, the energy that gravity provided was
GPE = m * g * h
Where
m is the total mass of the tower = 288,000,000kg (this is a conservative estimate by G. Urich. IIRC, Mrs. Wood assumes 500.000.000kg, which would nearly double the available energy provided by gravity)
g is the gravitational acceleration = 9.8m/s
2h is the height above ground of the center of mass of the tower. This would be half their roof height if mass was evenly distributed. It isn't, because the lower stories are built more strongly than the upper stories. So h = 40% of the roof height is closer to the true value; that's = 170m
GPE = m * g * h = 288,000,000kg * 9.8m/s
2 * 170m = 480,297,600,000 Joules.
When a tower collapses in 15 seconds, these Joules are converted into fracture energy, heat and other sinks, at a power rate of GPE / t:
P = 480,297,600,000 Joules / 15s = 32,019,840,000, or about 32,000MW.
A large nuclear power plant has a power output of a bout 1,000MW. Thus,, the power release of gravitational energy alone, per tower, was equal to the total power output of 32 large nuclear power plants.
The most powerful laser weapons in experimental phase today have a power on the order of 1MW, and can fire at most for 5 seconds on end. Their power is weaker than the gravitation power of collapse by a factor of 32,000 and their total energy release is only the 100,000th part, or 0.001% of the potential energy of either tower due to gravity alone.
To this we can add the chemical energy released by the burning of roundabout 10,000 gallons of jet fuel per power, which is about on the same order as the towers' GPE; the kinetic energy of the planes which is much less, but still 1000 times higher than what DEW can do, and the chemical energy contained in combustible office contents, which is even higher than anything we looked at so far.
So no, I am not saying gravity provided all the energy. I am saying that gravity provided 100,000 times more energy than the strongest DEW can, but jets, fuel and burning offices provided even more energy.
The DEW theory is thus 5 orders of magnitude removed from reality.