Two classified UFO shapes?

[Mantiss2021]

Congresswoman Nacy Mace says she was told there are two UFO shapes that are classified and not debunked. She was apparently briefed about them in a SCiF.

what do you think they are?

the crosses?

chandaleer?

jellyfish?

Watch video here to hear he describe on Twitter

I think one if them might be the transparent/semi-transparent sphere with the black cube inside.

My speculation: this shape would be classified due to the technology it incorporates/demonstrates, specifically material science technology allowing "vacuum cell" technology.

Such technology would revolutionize aviation; or at least a major segment of that field. Which would have serious economic impact if it became public.

The spherical shape provides the maximum interior volume for the least surface area: lower surface area equals lower drag. A sphere is also highly resistant to external pressure; consider its common use in the design of extreme depth bathysphereic vehicles.

But, in ordinary aerodynamics, spheres are less than ideal in terms of maneuverability, so a novel propulsion and vector ingredients system, likely utilizing gas thrusters, is a potential inclusion as well. Might be a clue as to why (if) the internal cube has been seen to contact the transparent sphere at the vertices of the cube: these would be the logical locations of the thrusters ports. Such an arrangement would provide multi-axis propulsion and control.