The room was circular, forty feet in diameter, constructed of pre-Cambrian crystalline schist blocks reinforced with hand-poured naval titanium plating.
It smelled of ozone, eighty-year-old cedar preservation oil, and the dry, pure chill of an un-violated mountain redoubt.
Down the center of the chamber, illuminated by the continuous amber glow of independent tritium lamps, sat forty-eight massive titanium transit cylinders bolted to the bedrock.
Inside each cylinder, sealed in pressurized nitrogen, rested the mechanical, analog brass code-drums and mechanical target-release ciphers for the nuclear deterrent of the United States.
No digital hack could touch them.
No satellite override could blind them.
They were physical, un-hackable, eternal.
I walked down the central gangway, my hand-welted leather field boots ringing clear against the diamond plate.
Barnaby walked at my right heel, his amber eyes reflecting the soft tritium light.