saw a schematic drawing of a ufo on cia website years ago?

I was just reading a totally unrelated thread and something jogged my memory of this incident. it was several years ago, maybe 5, probably more like 10. I was just bored one night and ended up looking at declassified CIA docs on their website. I ended up coming across this one, I can only describe it as technical schematic drawing of a saucer or UFO looking object, it was clearly uncrewed and had all kinds of antennae and stuff and seemed very complicated inside. But there was absolutely no context to any of it, and I dont remember finding anything else similar, I only remember seeing that on one or maybe two pages, and I’ve never seen it again or seen it anywhere else on the internet.

Does anyone know what the hell I’m talking about? I feel like it sounds delusional like why would the cia just publish a schematic of a ufo in the public. but I know what I saw. I’m not even jumping to conclusions here, it was probably some earthly technology, but it was still very unusual and unique and I’ve still never seen anything like it. I guess I sort of just dismissed the whole thing because it seemed too good to be true and the fact that nobody else on had internet had apparently noticed this document made me feel like I must be crazy or something