For about six weeks around the 2019/2020 holiday period, numerous witnesses, law enforcement personnel and bystanders reported seeing formations of drones flying what appeared to be grid patterns over northeastern Colorado and southwestern Nebraska. There was also an isolated sighting in Minnesota. The various reports were relatively consistent in describing the aircraft as being fixed-wing aircraft about six feet across and in some cases there was a larger drone that appeared to be leading a group of smaller aircraft. Whoever was flying them didn't seem to care if anyone saw them as they frequently operated near highways and near towns. Numerous cellphone images and videos were supplied to FAA officials.
This is a companion discussion topic for the original entry at https://www.avweb.com/aviation-news/faa-in-the-dark-about-drone-swarm-sightings