According to Professor Haim Eshed, the American Army works together with aliens deep onder the surface of Mars. There was almost a disclosure by Donald Trump regarding this suject. But the aliens intervened and stopped it, claiming humanity is not ready for disclosure.
My answer: these beings are no aliens but demonic spirits (Ephesians 6:12) who do everything to seduce us. I personally do not believe that the Americans and some alien species work together under the surface of Mars. Why would they go all the way there? Why would the Gray Aliens work together at all with us or the Americans? The Gray Aliens can do what they want since they are evil spirits. They do not need our permissions or assistance for their abduction programs.