Several drones swarmed Navy destroyers off the California coast in July 2019,and it remains unclear who was behind the nighttime flights,according to a report on the website The Drive,quoting ship logs.As many as six drones flew around the warships at a time in often low-visibility conditions over a number of days,with the drones flashing lights and prompting security precautions onboard.The drone flights took place near San Clemente Island,home to sensitive military facilities: a Navy SEAL training site,the Navy's ship-to-shore live firing range and an airfield.The drone flights prompted inquiries from investigators and intelligence officers in the Navy and the FBI,and are receiving high-level attention.
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