http://aliens.monstrous.com/dulce.htm
quotes
Bennewitz along with Dr. Leo Sprinkle then studied the case of
Myrna Hansen who said under hypnosis that she had been abducted by the aliens and taken to a secret underground base where they saw the cattle being mutilated and drained of their blood and vats containing human body parts. Implants were placed in the bodies of her and her son and that the aliens could control their minds through these devices.
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During this period, 1980 to 1987, Bennewitz was visited by many other UFO researchers, including John Lear and Linda Moulton Howe. In 1987, another abductee named
Christa Tilton, added to the tales of underground bases and aliens and vats with human body parts in them.