The Mysterious Drones Flying Over U.S. Military Bases

For 17 days last year, unidentified drones swarmed an area in Virginia that is home to a military base and other sensitive intelligence sites. WSJ’s Gordon Lubold looked into why it was so difficult for U.S. officials to stop them.  Further Reading: -Mystery Drones Swarmed a U.S. Military Base for 17 Days. The Pentagon Is Stumped.  Further Listening: -How Ukraine Built a Weapon to Control the Black Sea  -Cheap Drones Are Transforming the Battlefield  Learn more about your ad choices. Visit megaphone.fm/adchoices