USA has shot down 3 UFO's from the sky

Image from Pexels So most recently 3 ufo's have been shot down by the US air force and according to them the unidentified flying objects were unmanned. So does that mean that these ships could also belong to China or could these ships maybe be controlled by Aliens from outer space or even Advanced Robotic Intelligence such as the Transformers movie from outer space? Could you imagine Earth suddenly has to deal with Aliens from outer space that start attacking us Earthlings. Don't we humans have enough problems of our own on this planet already? Although it would be interesting if we could capture one of these ships and find out if they are being controlled by humans or civilization from outer space. It's already strange that China could be spying on many Countries around the world but imagine another Intelligent form from outer space also spying on us. For many years there has been UFO encounters and some people claim that they have even been abducted by Aliens. Why Alien