"Hybrid aerospace underwater craft"

I just had flashback if a video I saw years ago with a "UFO" that flew in and out of water without slowing. I dismissed it because physics, but the Navy is actually talking about such things like they're real now. Hmmm.

The emdrive doesn't go away, keeps getting dismissed with dedicated shills, and seems to require a new understanding of physics to explain experimental data. I wonder if emdrive discoveries prompted patent disclosures to stay ahead of garage breakthroughs.