The general public was first amazed by the story & visual_effects of this movie in 1977 on November 16.
"In the Sonoran Desert, French scientist Claude Lacombe (François Truffaut) and his American interpreter, mapmaker David Laughlin, along with other government scientific researchers, discover Flight 19, a squadron of Grumman TBM Avengers that went missing more than 30 years earlier. The planes are intact and operational, but there is no sign of the pilots. An old man who witnessed the event claimed "the sun came out at night, and sang to him." They also find a lost cargo ship in the Gobi Desert named SS Cotopaxi."
https://en.wikipedia.org/wiki/Close_Encounters_of_the_Third_Kind#Plot
http://www.rogerebert.com/reviews/close-encounters-of-the-third-kind
http://gifsgallery.com/close+encounters+gif
Over the decades, several people & vehicles have mysteriously disappeared in the Bermuda_Triangle.
https://en.wikipedia.org/wiki/Flight_19#Navigation_training_flight
http://www.binnallofamerica.com/2014/06/10/alien-base-inside-bermuda-triangle
http://www.unmuseum.org/triangle.htm
https://en.wikipedia.org/wiki/Devils_Tower#Recent_history