http://www.ufoandparanormalnews.com/Government-Stories/about-small-ufo-witnessed-in-the-vicinity-of-the-ground/ The area where UFO appears extends it from the high degree of which the aircraft flies to the space in the vicinity of ground. The size that UFO is the largest might be "Cigar type mother ship" of 1000 meters or more. And, it was witnessed that small "Disk" came out from the mother ship in Europe of the 1950's. There is a similar case also in Japan. Mon, 18 Jan 2010 22:09:24 UTC en