i didnt want to mention it because people would think i am nuts like i said you guys were , but my theory is that people are seeing the biblical Nephilim, which occured in the days of Noah, and are human/demon hybrids, aka 'the giants'... the Hebrews saw them when the spies went to check out the promised land... Not human/demon hygrids. The transgression in Gen 6:4 was between human beings and the sons of God. The sons of God and the nephilim are not the same; the nephilim (giants) are offspring of the mixing of the sons of god, and the daughters of men. And nephilim can not be angles, or fallen angles. The Word of God is specific in that angles can not have offspring.