If I weren't inclined to consider these texts largely (if not entirely) allegorical in nature, I would say Ezekel's account of the cherubim and their "chariot" would pique my interest.

Atheist, here, who views the contents of the Tanakh as a mixture of history, instruction, allegory and parable. So while I don't have a literal reading of Ezekiel, I understand and appreciate the story of this prophet through its own cultural and religious lens... and he was decidedly NOT part of a ufo cult. Ezekiel's vision occurred after Nebuchadnezzer took Jerusalem, while he - the son of a priest and as such a former member of the upper class - was in exile. The Lord appeared to Ezekiel during this ordeal, revealed to him the glorious creatures of heaven and the throne, and made Ezekiel His prophet. "And He said to me; "Son of man, I am sending you to the children of Israel, to rebellious nations, which rebelled against Me; they and their fathers rebelled against Me to this very day." The visions and prophecies he received make perfect sense in light of the recently conquered - it both explains the ordeal (punishment for not obeying God), assures him of justice and order (judgement against rebellers and other nations) and promises eventual deliverance (restoration of the temple and success of Israel). And if we want to get cynical about it, it also establishes some authority for a member of the upper class, which he might have felt a wee bit entitled to (just sayin'). That's a great deal better than "fuck it, there is no God, Jerusalem is lost, the Babylonians are in charge, life is random chaos, and we're screwed".

I'm actually inclined agree with the first portion of your analysis, hence one of the reasons I consider these texts to be allegorical. There's no need to be facetious and passive aggressive in your misinterpretation of my intent.

Now, what the hell do Martians have to do with any of that???

Look, absolutely anything can scream "aliens!" if you put a template of preconceived notions over it and then view it through ufo goggles. Likewise you could make a case for Ezekiel being mentally ill if you view the story through the lens of modern psychiatry. Or maybe Ezekiel ingested some hallucinogens. Or maybe he was visited by the Fairy King. Or maybe he was a flim-flam man who made it all up for personal gain. Or maybe, just maybe, we can refrain from co-opting someone else's religion and history in order to play around with a self-serving, SyFy-ready exegesis.

Do we have any Jewish scholars here who would care to weigh in?

My point was, in response to OP's question, if one were to take the depiction of Ezekiel's "vision" as a literal occurrence (which I do not necessarily), a theologian or mystic could interpret it as a supernatural event, that these were literally multi-headed "angels" which is moderately interesting considering the influence Ezekiel's supposed vision had on the development of Merkabah, an early form of Jewish mysticism pre-dating the Kabbalah.

As OP was asking about the "UFOs" and the Bible, Ezekiel's vision of the mult-headed cherubim arriving in their four-wheeled "chariot" came to mind, being vaguely reminiscent of what some would interpret as a "UFO" and perhaps "aliens". I do not subscribe to this theory, however am aware it exists and felt it was perhaps worth mentioning in response to OP's initial inquiry..