Drone Mystery Lights up Colorado Skies

摘要

Northeastern Colorado was visited with a mystery in late December and January. Residents began seeing drones from 7 to 10 p.m. each night, moving in groups as large as 30, and flying in a grid pattern. The drones stayed about 200 feet to 300 feet in the air and flew steadily in squares of about 25 miles, at speeds estimated at 25-40 mph. Reports were so numerous that a multi-agency task force was formed to investigate, including 10-15 law enforcement agencies as well as the FBI and Federal Aviation Administration (FAA). The drones were reported to measure six feet across and sound like a small jet engine. "These are not drones that people in our county can just buy," said Washington County Sheriff Jon Stivers.