The gist of the podcast was that there are new modeling concepts that go beyond engineering and into production so they can tell the downstream effects of design changes more readily. Interesting. There are 5 individual technologies they are after that weren't named - although directed energy weapons and stealth were mentioned. This is a functional full scale proof of concept flying prototype of one of those 5. Also, rather than one monolithic program like an F-35 that will do everything and define what we use for decades, they are talking about using a suite of comparatively inexpensive dedicated devices (manned and unmanned) with short life cycles. I was reading about this stuff in the '70s. The technology is just catching up to the concepts from then. Yes, they have a lot of weird stuff stashed away. Some of it flies. Cool.