mundane spy fiction meets mythos

Once, when Roger was a young boy, his father took him to an open day at Nellis AFB, out in the California desert. Sunlight glared brilliantly from the polished silverplate flanks of the big bombers, sitting in their concrete-lined dispersal bays behind barriers and blinking radiation monitors. The brightly coloured streamers flying from their pitot tubes lent them a strange, almost festive appearance. But they were sleeping nightmares: once awakened, nobody -- except the flight crew -- could come within a mile of the nuclear-powered bombers and live.

Looking at the gleaming, bulging pods slung under their wingtip pylons, Roger had a premature inkling of the fires that waited within, a frigid terror that echoed the siren wail of the air raid warnings. He'd sucked nervously on his ice cream and gripped his father's hand tightly while the band ripped through a cheerful Sousa march, and only forgot his fear when a flock of Thunderchiefs sliced by overhead and rattled the car windows for miles around.

He has the same feeling now, as an adult reading this intelligence assessment, that he had as a child, watching the nuclear powered bombers sleeping in their concrete beds.
A Colder War - a novelette by Charles Stross

There are bits of it that are ironically humorous but it is, in the lovecraftian vein, more realistic and nihilistic than any other running theme. And it's difficult to imagine more frightening a scope than the Cold War era weapons under discussion, unless it is the frightening, unnatural symbiosis proposed through governments and an interaction with That Which Man Was Not Meant To Know.