Yes, absolutely. So the process to validate for manufacturing readiness of our new materials include very, very significant testing of essentially thousands of samples, if you would. That's what Defense Logistics Agency, DLA is essentially bank rolling and what we're working on. There's one key piece of equipment called refractor meter very technical things. Its extremely expensive piece of equipment. I believe there's only two of those in the US to give a sense of just how specialized it is, we're waiting for the delivery of ours. Once it comes, which should be any time in the next 6 week to 8 weeks, I hope, we have already prepared a lot of samples definite and will essentially be tying someone down to a chair next to it, and he doesn't leave until he measured all the sample sort of thing. So we have an enormous amount of samples and materials we've been preparing for many different measurements, but that refractor meter is probably the most important piece of equipment for the measurement and for ongoing quality control of some of those materials later on. This will provide the, I'd say, sort of book of data, if you would, for optical designers showing not only if you give a parameter what is the CTE, The Coefficient of Thermal Expansion to not just provide one number and say it and that's it, but actually provide with it some statistical information showing, this is coming out as a result of measuring its on 150 different samples from 10 different lots produced in different places or in different ways, making sure that we take into account the variability and there's very, very significant statistical data behind it. We're sort of fighting an uphill battle in a way where Germanium and other materials have the history of 60 years of usage. So there's a lot of data out there that all the optical designers know and are based on that is -- comes out of the many, many years of using it. New materials new, obviously and so we want to jump to start the process of it getting embedded into systems by providing a lot of statistical data that otherwise probably people would just wait and work slowly with it until they gain enough -- they turned enough confidence with it. So that, in essence, really what DLA, Defense Logistics Agency, strategic material is financing here. That's a portion of that. It's a very, very well-defined set of data that we already started to collect, but again, the key information reliance on one piece of equipment that we're just waiting for it to arrive. And as a side note on the equipment, we could outsource the measuring. It's very expensive. Nearly the project would cost was nearly the cost of the machine. It would take months. So it'd be longer and more expensive and DLA is funding about half of the machine cost in addition to other expenses.