It would probably look like an extremely refined version of the original but would still be using jet propulsion. The maneuvers of many of the UFOs couldn't be

It would probably look like an extremely refined version of the original but would still be using jet propulsion. The maneuvers of many of the UFOs couldn't be performed by jet engines (stopping on a dime and then moving in the opposite direction instantly). Which would imply a new technology for movement. If you think about our current technology it follows a pretty linear evolution going all the way back to steam engines, in that we are setting stuff on fire and catching the energy from it. We just have more efficient material and better energy capture. We would have had to surpass this modality for creating energy entirely to achieve the feats that some of these UFOs are performing. That would have massive implications for energy, transportation etc. This just doesn't make sense unless most of what we know about our government is some giant facade.