You Couldn't Possibly Imagine…It's NOT What You See, It's What You Don't See!
Do they have technology they we may not see for another 100 years? Have they successfully tested and used antigravity technology for space missions that very few know about? Have they seen things in space that would change the world as we know it? There are craft up there that are not of this Earth, so how would you react if you were told life Exists outside of our Atmosphere?