The first thing to know about potential alien invaders is that they are no longer classified by the U.S. Government as unidentified flying objects. That sounds too scary. They are classified as unidentified aerial phenomena. It sounds a bit better.

But intel officials haven't completely ruled it out as a possibility, The New York Times reported. An unclassified version of the report will be released to Congress at the end of the month. See more stories on Insider's business page. US intelligence ...