What has just been observed is wonderful stealth technology on a boomerang shaped craft. Wow and surely one of ours as well. It is something we would cook up in order to operate in our atmosphere. An alien would hardly bother.
We already understand the gravity ships and i expect that this tech will be in these smaller craft as well. It would allow a high performance craft to actually land.
All good stuff. Makes all those other craft obsolete and likely designed to smoke the world. also recent wind tunnel tests are surely from work done a long time ago as it is is new stuff..