Last week, the U.S. government released a new report that attempts to categorize 144 verified sightings of unidentified aerial phenomena, or UAP. They could only definitively explain one of them.  The new report signals a shift in the way we think about UAP. As technology has advanced and evidence of these encounters has increased, the question has become more urgent: What exactly is happening in our skies? Guest: Shane Harris, intelligence and national security reporter for the Washington Post Host Lizzie O’Leary   Learn more about your ad choices. Visit megaphone.fm/adchoices