A Chilean Navy AS532 helicopter was a on a scheduled flight on November 11, 2014. Two men were on board: an experienced Navy pilot and a technician, who was there to test a MX-15 infrared camera made by WESCAM. This sophisticated piece of intelligence kit is ideal for secret surveillance missions. Which is just as well, for what the two men saw that day was beyond bizarre.
The helicopter was flying due north along the Chilean coast, to the west of Santiago, at an altitude of around 4,500 feet, and at a steady speed of 151 mph. And flying conditions were good. There was an ambient air temperature of 50 °F, unlimited visibility and a cloud base at 10,000 feet. Everything was entirely normal.
Or at least, everything was entirely normal until 1:52 pm. That was when the technician spotted something peculiar in the sky, moving at about the same speed as the helicopter. Both crewmen could now see the moving object unaided, as it flew west-northwest around 40 miles away. Of course, this particular helicopter had a high-tech infra-red camera. And so the technician quickly honed in on the mysterious object.