Watch on Soap2day. For decades, UFOs have been the domain of science fiction and conspiracy theories. But not anymore. Over the past few years, the United States government has begun taking sightings of unknown objects by members of our military seriously, and subjecting them to further study. Featuring first-person accounts by military eyewitnesses, government insiders and UFO experts, this special offers an update to HISTORY’s groundbreaking Unidentified series, and traces how we got here, and what a government investigation into 144 recent sightings can tell us about what these mysterious objects are and where they come from.