Although it could cause chaos, I think there should be absolutely full disclosure about the alien and UFO situation. The chaos would be worked out. Humans manage to adapt to changes and I'm sure after a little bit of worry and confusion, we would find a way to emotionally deal with it. It would become a new way of life. Humans would eventually grow used to the idea that aliens exist and interact with us. Some humans would be angry, protest, kill. Some would not. But, that's what humans do on this planet anyway, with or without aliens. It's nothing new. I think it's time to put it to the test. Tell all. Let us adapt our lives around the idea. It could give us hope and a new direction. Best of all, the aliens wouldn't have to hide anymore. Thoughts?