&gt;<i>There is significant evidence that US Air Force was responsible for the hoaxes. And, of course, Area 51 is an Air Force Base.</i><p>Yes, Area 51 is an AF base but CIA has paid for most of the planes that were tested there in 50s, 60s and 70s. U-2 was paid for, in a large part, by a CIA budget [0]. Same goes for  Lockheed A-12, a predecessor of SR-71, which too was paid for by the CIA [1]. Then there&#x27;s Have Blue, a predecessor of F-117 which, too, was paid for by the CIA. CIA also paid for a slew of other planes and prototypes which ended up either destroyed or as other AF planes. So while it was an AF facility, CIA had a large say in what goes on there.<p>CIA also has a large staff of psychologists and other sociology experts who can pull off various deceptions and spread propaganda to a large part of the population. UFO mythology was probably created by them. AF don&#x27;t have many experts in this area.<p>[0] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Lockheed_U-2" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Lockheed_U-2</a>
[1] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Lockheed_A-12" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Lockheed_A-12</a>
[2] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Lockheed_Have_Blue" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Lockheed_Have_Blue</a>