Aliens is more of an label. Such as an UFO... doesn't means Aliens, means something is not identified correctly by our Government. If you catch what I'm trying to say is that we're not the only life in this Universe. Their are by FAR too much evidence to say that we are alone. This video for example... shows that their was something their, cloaked as he said. Nothing showed until the UAV Rays hit that spot, and it was moving.
Just more evidence to add onto why we're not the only life out there. Universe is fucking huge. Their are no way that our scientists/Government can track something that is millions and millions light years away... but when shit starts happening around in our Radius... this is what we get.