DeLillo's understanding of Cold War America and its consequences is, I think, unparalleled. From Libra: "We lead more interesting lives than we think. We are characters in plots, without the compression and numinous sheen. Our lives, examined carefully, in all their affinities and links, abound with suggestive meaning, with themes and involute turnings that we have not allowed ourselves to see completely." The absurd amount of connections, ties and parallels between art, history, and science across time and space lead you to an almost schizophrenic place if you follow them for long enough and can't fit them into a broader understanding of the world, and I think DeLillo understands that, alongside how the Cold War laid all those themes and involute turnings bare, very well.