I've heard that before, I used what I thought were photos from various monuments/architecture from the Middle East (constructivist style from the 70s-80s). But who knows, perhaps those may have been just photomanip'd from somewhere else like Bungie studios? Using found stuff off the web can be the gray-est area...
Oh wow, quarantine zone too, does look like it, haha. Remember jamming out some Halo 2...good memories for sure. Probably unconscious inspiration, thanks.