As someone who has personally seen a couple of these things, I'm convinced that either extraterrestrial anthropologists are observing our planet, or human governments are operating highly advanced, top-secret craft. (I tend to think it's probably both.)
Think of it this way: if a group of violent, power-hungry monkeys on a nearby planet invented ICBMs and nuclear weapons, you'd want to keep an eye on them... wouldn't you?
Think of it this way: if a group of violent, power-hungry monkeys on a nearby planet invented ICBMs and nuclear weapons, you'd want to keep an eye on them... wouldn't you?