UFO's in my opinion are not extraterrestrial crafts (not that there would be anything wrong with that) but simply classified aircrafts. There is a lot of evidence to suggest this. Also probably the first to think about a Circular type aircraft were the Nazi's. Infact, after the War World 2, USA And Russia scrambled to get the most number of Nazi Scientist to work for them. This happened under a project codenamed "Paperclip" (If memory doesn't serve me wrong, there was another project too, but I can't remember the name). The story about aliens is counter information by the USA Government to protect there very highly classified technology. There is tons of evidence to support this, much more reliable than some dudes that sees a couple of orbs shooting accross the sky.
For example during the 80's, there were repated sightings of a Triangular type UFO...years later it turned out to be the f-117 stealth fighter.
The F-117A Nighthawk Stealth Fighter attack aircraft was developed by Lockheed Martin after work on stealth technology, and the predecessor test demonstrator aircraft, Have Blue, was carried out in secret from 1975. Development of the F-117A began in 1978 and it was first flown in 1981, but it was not until 1988 that its existence was publicly announced. (source:
http://www.airforce-technology.com/projects/f117/)So IMO UFO's are not E.T. piloted but just Top Secret Airplanes (And God does the U.S. Government have classified stuff). Maybe far less inspiring to the Sci-Fi fan, but way more probable and way more supported by evidence!!
Humbly,
FraterLvx
PS: Also things like the UFO's disappearing suddenly etc. can be explained with advanced camouflage technology. There are some types of technology currently under developement that would seem straight out of a Sci-Fi movie...For example the U.S government has been developing a type of body armor for infantry troops that will be adapted around 2020, which has the capability of making the soldier "invisible" or "disappear" (optic Camouflage Technology), resistant to any type of enviroment (can go and survive in chemically toxic enviroments etc.), with a helmet that monitors the soldiers vital signs and a lot of other stuff like super resistant bullet proof material etc.
[and this is no secret, it has even been broadcasted on the discovery channel, imagine what the real top secret technologies are...50 or 100 years more advanced than modern day technology....)
This post has been edited by FraterLvx: Dec 31 2006, 02:45 PM