...He said he was once in a picnic. There were three high ranking generals at it. Then he saw a typical classic 50's flying saucer. OK so one of the generals said - that is one of ours. He could not believe that we build em. Before that he thought they all came from outer space.
Well, this guy told me.
The aliens are not aliens, but they are us. In fact, they are not grays. Most are future humans that use time travel to come.