I honestly believe a foreign entity is testing artificial intelligence drones that are unarmed In an effort togather intelligence but also practice flight patterns. I think this is preparation for a mass casualty event in one the most populated states in the nation. Weaponry payload could be nuclear, biological, chemical, traditional explosives, napalm or EMP. If they run autonomous on Ai without any attachment or markings telling us where they came from then it is the perfect sneak and untraceable attack