They are being used by many right now, by Russia, Albania, Turkey, Germany, Iran, India, Freemasonry, Zoroastrianism and Hinduism and still being used in Egypt. This is a very ancient symbol of "UFO", the god in a boat and chariot of a "sun god" moving across the skies were also considered the very same winged concept.
This chariot concept is seen in many traditions and religions around the world, Helios, most prominent chariot god was seen in China, India, Russia, Scandinavia and ancient Germany.
And this is analysis of nephilims - "half-angel half-human" skulls. So called "failed experiment" of demiurge
Much Peace and Love!