网页2021年3月31日 · US Navy Destroyers Swarmed by Mysterious ‘Drones’ Off California in 2019. March 31, 2021. ExoNews Editor. Article by Adam Kehoe and Marc Cecotti March 23, 2021 (thedrive.com) • On July 14, 2019, a group of US Navy ships were conducting exercises about 100 miles off Los Angeles, near San Clemente island, and south of the Channel Islands ...