That's too bad the thread is degenerating, I guess the scoffers are board with all the "real" story threads. I believe the earth is already populated with millions of "hybrids"-- they look entirely human, even under medical evaluation. The only distinction I could think of that would be common among all of them would obviously be there DNA, so us hybrids try our best not to have our DNA taken, not that the government doesn't know all about us anyway.
I am not being sarcastic.
I will add this, that having been a member of a secret society, and knowing other members of other secret societies, I can say this, they all believe
they are descendants of extra-terrestrials.
If you don't believe me, check it out for yourself.