Operation Paperclip was a program of the Office of Strategic Services (predecessor to the CIA) where many of the former Nazi scientists from Germany were brought over to operate within the United States. It is believed that many of these scientists had been involved in many high end technological advancements for the Nazis such as flying discs. The Americans greatly wanted to control this technology and intelligence after the end of World War II.

The problem was that US law prohibited German Nazis from immigrating to the United States. The United States didn't want to lose these smart Nazis to other nations such as Russia, so a little handiwork by future CIA Director Allen Dulles tweaked a few things and got them over to the United States to carry on many more top secret programs.