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They reported seeing the Tic Tac descend from 20,000 feet in just an instant, stopping at the surface of the ocean. This and other reports suggest a propulsion system that alters spacetime and mass, so that there's no inertia. We Earthmen have no such technology.

I don't really believe that it is achievable, but the US Navy published some intriguing patents:

* Craft using an inertial mass reduction device [1]

* High frequency gravitational wave generator [2]

* Piezoelectricity-induced Room Temperature Superconductor [3]

[1] https://patents.google.com/patent/US10144532B2

[2] https://patents.google.com/patent/US10322827B2

[3] https://patents.google.com/patent/US20190058105A1

Gamma ray to the visual cortex.

or bits into the video camera and hud.