Some undoubtedly are, (drones) used for target practice for anti-aircraft gunners and pilots, without risking human life. and what more practical than simulating (future) targets such as UFO"s/ Spy satellites are another possibility, which was explored in, of all things the situation comedy My Three Sons. Plot went like this- Kid took a picture of a UFO. Father ( Macmurray, an engineer at an aircraft plant) takes the picture to a friend of his, a General in Army Intelligence. secrecy net clamped- howver in the fictional general"s conversation the UFO was a classified spy satellite called- of all things, MOONBEAM, hence the secrecy angle. maybe G-2 was not the best choice to investigate UFO:s which they were tasked with form many years, for example Major Quintanilla.
NO!
No-one knows.
Since UFOs are Unidentified Flying objects, it is impossible to know what they are made up of, at least until we identify them.
Where humans and alcohol are, UFOs will be.
the correct answer is UFOs thanks for asking
There have been reports of sightings of white UFOs.
The ones who study UFOs are called Ufologist. They study every thing about unidentified flying objects (UFOs).
Please check the related links for information about UFOs.
UFOs can go as high as your imagination allows.
Since UFOs are unidentified, it is unknown what is inside of them.
No, UFOs are not technically extinct, they are just rare to see.
UFOs? As in, 'flying saucers'? Simple. To make a 'flying saucer', get a saucer, pierce a hole at two ends and put a string through it and tie your contraption to the ceiling fan. Voila! FLYING SAUCER!!