It could be a purely machine-based organism from any other dimension or time (or from a world beyond the dimension of time).
Whatever it is may not even be interested in humans OR perhaps they want to manipulate us genetically to create something that is interesting to them.
They may need our rarest brain chemicals the way we need rare earth metals and minerals to manufacture certain products in their world.
Who the hell knows.
What we DO know is that something or someone is invading our secure airspace at will and there is nothing we can do about it.
First step is to "define the problem" (i.e., start figuring out what the hell is going on).
They may need our rarest brain chemicals the way we need rare earth metals and minerals to manufacture certain products in their world.
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Actually rare earth metals are not that rare. China cornered the market because of low production costs and lack of environment constraints. The U.S has one of the largest rare earth deposits in the world but we keep manufacturing reasons not to mine it.
Let's not leave "the box" entirely. It seems these things have a penchant for military bases and activity.
My Ancient Aliens education has taught me that they were here looooong before us and yet we insist on calling them “aliens.”