We may not know if aliens exist, but UFOs still pose a national security...

 

 

A highly anticipated report from U.S. intelligence released Friday focuses on unidentified aerial phenomenon or UAPS, commonly known as UFOs. The report from the Office of the Director of National Intelligence concludes that unidentified objects clearly pose a risk to flight and a national security threat to the U.S. But the larger question about alien life remains unanswered. John Yang reports. Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG Find more from PBS NewsHour at https://www.pbs.org/newshour Subscribe to our YouTube channel: https://bit.ly/2HfsCD6 Follow us: Facebook: http://www.pbs.org/newshour Twitter: http://www.twitter.com/newshour Instagram: http://www.instagram.com/newshour Subscribe: PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts Newsletters: https://www.pbs.org/newshour/subscribe