http://www.aolnews.com/2011/04/13/fbis-vault-website-ufo-doc-most-likely-a-hoax/
"So this was a con job. Newton was laying the groundwork for it by saying there had been three crashed saucers with creatures."
Maccabee says the story kept getting passed from person to person and believes "an Air Force Office of Special Investigations man picked up on it and told the FBI guy, who then sent a memo to Hoover."
......
I like the last line from the article:
"The truth is always out there, but it often requires investigators to use the correct filters to weed out the good from the bad."