From what i have been told and was even able to experience because of mt ongoing contact with one of these "Aliens" if thats what you would prefer to call them.The famous grey that is the most commonly seen by people all over the world.The greys are vessel's that are used when research needs to be done. When i say vessel, i mean that it is like a lifeless doll that is given life when an ET places its soul into the body. The greys are not biological and do not get bored or even tired! I was shown a vision by a ET and it was from the perspective of the grey drone. I'll try to describe what it was like the best i can, The drones vision was very acute and focused like SUPER HD x50.They have very complicated nervous systems and are not always in control of their emotions or what they think. But when the drone is in control of its emotions the emotion is very intense. Talking for the drone is very quick because they dont have any vocal cords all of the comunication between them is done with telepathy which by the way beets talking by along shot. Mostley done with emotion and imagery hope it helps! 