It has also been stated by some astronauts, that alien craft had trailed our own craft, near and on the Moon, and that our teams on the Moon were "observed' by alien beings. Dunno if this is reliable or not, but I am planning to do some research, for my story about the Grays.
regarding the whole UFO cover-up... recently, I have had a new way of looking at things... see, we have all been made to think that our government is keeping all this stuff a secret.
I really don't think so... yet, I also think we DO have aliens and their tech, at our disposal. I will explain.
It is human nature, to want to go out, and brag about and flaunt the newest stuff we have, when we get it. When we get a new car, we show it to our neighbors. When we get a promotion, we tell those close to us about it. When we have new technology, we make new things with it. Human nature eliminates the possibility that WE would be covering up alien beings and technology... we would naturally want to share that with everyone.
I am speculating that it is the ALIEN government, that is ordering us to keep this silent. They may not think we can handle the knowledge well, or that we might react with fear.
Consider that if these aliens are real, then to us now, they would almost appear God-powerful. Any race that can traverse the galaxy with such common ease, would certainly have not only regular technology, but weapons FAR beyond not only our level of power, but understanding, as well.
I mean, imagine the potential destructive power such a race could unleash upon our world, if it wanted to. The human race would never have a chance. Launching every single weapon we have on the surface and in orbit of the entire planet at them, would be equivalent to someone throwing a single grain of sand at an oncoming atom bomb, in a desperate last hope to somehow stop it... there would be NO way.