In answer to something you asked in a post that has since been deleted:
Presuming John was as ignorant and superstitious as you suggested, and presuming he was whisked into the future like Scrooge to witness actual events as they unfold, not a Christmas in this case, but twentieth century warfare....
...which we now know isn't the case, as we're well into the twenty-first century...
...but high tech warfare, whatever form that might take now that the Dispensational assertions of the last sixty or seventy years have proven bogus, I would say it more likely John would describe "iron beasts" on the ground and "iron dragons" in the air.
Locusts...puh-leeze!
But that's presuming as you presume.
I do not presume that John, or first-century civilations, were so ignorant. There is no reason to. That's Hollywood, not history, and it's a view that is imposed upon the text, and not taken from it. Neither do I presume John was lacking the words to describe exactly what he saw.
But even if he were...we're told he was 'in the spirit' when he saw these things, which means his perception was supernatural. I don't think the fact that the tanks and choppers were mere machines could have or would have been hidden from him.
I come to the Revelation with the presumption that John faithfully described what he saw in the spirit...living creatures, not machines, and that the meaning and understanding of the visions were no less accessible to him or anyone of any latter day century.