The U.S. government said more than 140 reports of mysterious flying objects have been collected since 2004 from military pilots and other sources, but it failed to offer concrete explanations for most of the instances in a so-called UFO report released Friday.The preliminary assessment of "unidentified aerial phenomena" cited 144 reports originating from U.S. government sources, of which only one case was identified as a balloon. It did not mention whether the UFOs could be of extraterrestrial origin."Limited data leaves most UAP unexplained," the Office of the Director of National Intellig…READ FULL ARTICLE