Good question. Until it becomes part of the Public Record we can only make educated guesses, which is what I do here. There are 138 IVAS Vendors. I can name 10 or 11 off the top of my head. The divisions of responsibility revolve around the HUD, the Sensors, the Puck and the Radios. IVAS is the most advanced and sophisticated technology the US Military has ever produced. I'd compare it to the Manhattan Project in terms of it's importance.

Without the military eMagin would have shuttered their doors long ago. Dr. Darrell Hopper at the Air Force Research Lab became eMagin's advocate, golly it's been about twelve years since I heard him talk about it. He saw the potential and pressed the Government to make sure this Tech didn't fail. It was so close, so many times. But the military continued to support them and they have been Partners ever since. Night Vision and attendant technologies are the most guarded in the world.They have absorbed the Military Culture where everything sensitive is on a need-to-know basis. 

You know during the VR boomlet a few years with Oculus and all that they got very excited on CCs talking about the potential and they got burned. Same thing happened with Camera Viewfinders. They got excited and they got burned. It obvious it's different now. They are Sphinxes. It's going to be big and they know it and so they clam up.