So...and this must be kept in mind because there has been a lot of hype around our findings, of this thermitic material, but fact is we do not know where it fits into hypothetical blast scenarios of world trade center. Many people think that this is explosive, and all we can say...'maybe'. Actually, we do not know. The...in my opinion the collapse scenarios for world trade center are complicated. Are very complicated. There is a lot of energy in the thermite reaction. And in recent years, and this means from the early nineties, this has been subject of military research to use the energy of the thermite reaction into an explosive action. That is, that you add chemicals to the reaction forming this pressure wave which makes the material an explosive. And at the same time, maybe you recall, we saw the advent of nanotechnology, which is a field of technology in between molecular sciences like chemistry, and what we call 'bulk materials', which is the realm of physics. Nano-technology is a boarder discipline between our physical world and the world of chemistry which is molecules. It is...just makes all the particles much smaller. So what you have, you have particles almost the size of molecules, they are bigger than molecules but they are so small that, in this case, when we are...in the thermite reaction...it's a solid state reaction, that is there is two powders reacting with each other. But if you make the particles very very small, the reaction is much faster and much more violence. So, if we talk about nano-thermite, where the particles are approaching molecular dimensions, the reaction is roughly 100 times faster than the classical thermite reaction. And for that reason...so we know that the research has been going on, we know that the principles of the thermite reaction forms the basis of making explosives and rocket fuel as well, propellants, so now you have three categories of what we call 'energetic' materials, we have incendiaries, explosives and rocket fuel. As an example, the second, what you call, 'step' of the space shuttle rocket, this was actually a nano-rocket fuel, so what I'm saying here is we have a chemical reaction with a lot of energy, and that can be used either as an incendiary or as rocket fuel or as an explosive. And we do not know where our findings come in.