Here's a very interesting article about the general situation, written by Whitley Strieber. He makes one typo or possibly just a careless error where he mentions the German invasion of France being in 1942 (it was in 1940), and I thought I'd mention that before anyone else jumps on it...but it's completely inconsequential, as it has no bearing on the main theme of the article, which I think is quite apt and well thought out on his part: