The craft is almost completely silent and moves very smoothly. It usually moves slowly until it decides to take off. Then it moves VERY quickly and is out of sight in the blink of an eye. MORE THAN ANYTHING I simply want to understand what this is and why it is here?
It is almost totally silent but not quite. It makes kind of "crackling" noises. It's hard to describe them but they are only intermittent and not very loud, but you can notice them. Sometimes there is a very slight hum that sounds kind of mechanical, almost like when you are near very large power lines. But it is nothing loud like a jet engine, it is very quiet for the most part.
It moves almost like an insect. If you have ever seen a bug on a pond, it is kind of like that. It is VERY smooth and slow most of the time, but then every now and then it will rotate very quickly and go VERY fast into another direction, then stop, and repeat the process all over again. There is just something very unnatural about the way it moves.