Are The Metallic Orbs Protecting This Planet From Manevolent Extraterrestrials?

There's a very clear video of a huge UFO taken in 2008.
Images of strange craft taken in 2007.
Someone submitted a video of strange crafts taken with a night vision camera.
The three categories of the phenomenon - Residents, visitors, and strangers.
Ancient roman cities built with advanced knowledge.
UFOs in the mainstream are now admitting that some UFOs come from the oceans.
An explanation of all the orbs that have been reported and seen throughout history.