Shamens from the rain forests and Ancient Gnostics report same thing. Aliens, or Archons
Pablo Amaringo, a shamen who took ayahuasca (the original DMT) from the amazon rain forest depicted his trips in paintings YouTube - ‪Ayahuasca Plants Inspirit Visionary 100+ Paintings by Pablo C. Amaringo‬‎
When asked why he stopped doing ayahuasca he stated, the flying saucers became so much a part of the experience he didn't wast to do it any more.
Ironically this is what the ancient gnostic christians perceived as well in their spiritual pursuits. The gnostics called these beings Archons.
Archons
What is an archon? The term is mentioned many times in the Nag Hammadi texts. According to John Lash, archons are a species of "predatory inorganic beings".
As a momentary aside, does that last phrase sound familiar to you? It would if you were a fan of the writings of Carlos Castaneda, who frequently used that very term.
Gnosticism / Controller Agenda
I have had my own problems when attempting to go to a certain level, of meditiation.
It's almost like there is a real agent Smith from the Matrix blocking our path.
I'm not saying all Aliens are bad. But I think some are.