It's likely that at least some of the objects described as UFOs are experimental and top secret in nature.
Military Aircraft
Governments and militaries around the world spend considerable dollars developing concept and experimental aircraft and, understandably, go to great lengths to keep these projects secret. For instance, the latest American stealth bomber, the B-21 Raider, is estimated to cost $729 million per aircraft and almost all aspects of the program remain classified.
In some cases, these aircraft closely resemble objects that the public has associated with UFOs. Since World War II, the public has eventually been made aware of aircraft designed by the military that resemble wings, discs, and saucers — sometimes decades after they were first tested.
UFO Patents & Other Advances
In 2019, Navy scientist, Dr. Salvatore Pais, secured patents for a compact fusion reactor, a force field to deflect asteroids, and craft that can navigate air, space, and water at extreme speed. Diagrams from these patents appear to show experimental research that is attempting to move beyond science fiction to science fact.
Another interesting patent held by the U.S. Navy describes how lasers can be used to generate a plasma ball that acts as a decoy to homing missiles and other stealth detection equipment. Could technology developed around these patents be the source of some UFO sightings?
