Genesis 6:4 -
There were giants in the earth in those days; and also after that, when the sons of God came in unto the daughters of men, and they bare children to them, the same became mighty men which were of old, men of renown.

3 Greek Apocalypse of Baruch 4:9b-11 -
And the angel said, Thou askest aright. When God caused the deluge upon earth, and destroyed all flesh, and four hundred and nine thousand giants, and the water rose fifteen cubits above the highest mountains, then the water entered into paradise and
destroyed every flower; but it removed wholly without the bounds the shoot of the vine and cast it outside. And when the earth appeared out of the water, and Noah came out,,,

the giants live on in memory, like something deep rooted in our existence,,,for some far more than a memory

Anunaki,,,celestial giants,,,giant like beings and UFOs,,,Jenny Randles "Alien Contact: The First Fifty Years" (formerly of British UFO Research Association),,,15,000 reports,,,1965 onward,,,comparison to "present" day abductions,,,

The Book of the Secrets of Enoch (also referred to as "Slavonic Enoch" or "2 Enoch") 2 Enoch 1:6 -
And there appeared to me two men, exceeding big, so that I never saw such on earth; their faces were shining like the sun, their eyes too were like a burning light, [and from their lips was fire coming forth with clothing and singing of various kinds in appearance purple, their wings were brighter than gold, their hands whiter than snow.]
http://www.sacred-texts.com/bib/fbe/fbe107.htm

2 Enoch3 -
IT came to pass, when Enoch had told his sons, that the angels took him on to their wings and bore him up on to the first heaven and placed him on the clouds. And there I looked, and again I looked higher, and saw the ether, and they placed me on the first heaven and showed me a very great Sea, greater than the earthly sea.
http://www.sacred-texts.com/bib/fbe/fbe110.htm

2 Enoch 4 -
THEY brought before my face the elders and rulers of the stellar orders, and showed me two hundred angels, who rule the stars and their services to the heavens, and fly with their wings and come round all those who sail.
http://www.sacred-texts.com/bib/fbe/fbe111.htm

Enoch the victim of an alien abduction,,,Betty Ann Luca [1967 - in this account the abductors are only 4-5 tall http://www.bibliotecapleyades.net/vida_alien/alien_andreasson.htm],,,
Dr. BL Beverstein, hallucinations and dreaming,,,

Voronezh, Russia (1989),,,Paul Stonehill "The Soviet UFO Files"
http://ufos.about.com/od/ufofolkloremythlegend/a/voronezh.htm
http://ufoevidence.org/cases/case120.htm

Anything going on with UFO phenomenon today has always been around,,,found in ancient mythology all over the world,,,