It's not even a "mystery" to begin with. It's not difficult to understand what is happening. It's like saying that a hot air balloon sighting is a mystery, jus

It's not even a "mystery" to begin with. It's not difficult to understand what is happening. It's like saying that a hot air balloon sighting is a mystery, just because we don't know who's flying it. Hot air balloons are not mysteries, and neither are "drones".