Thermal curtains and movable lattices, controlled by artificial intelligence, adjusted sunlight and temperature. Floors, walls, and ceilings were wood.
Below the cabin, an underground concrete bunker mirrored the cabin’s dimensions. A wide, hidden sliding door in the hallway of the sleeping area disguised as a bookcase gave access. Pressing four book spines in sequence for ten seconds unlocked it, revealing a staircase with wooden steps down to a distribution hall.
The main bunker room matched the upstairs living space. It had a lounge, bar, and pool table. One corner held a computer station with multiple screens. Floor-to-ceiling bookcases surrounded the room with thousands of volumes: art, geopolitics, philosophy, computing. Floors and ceilings were wood.
From the distribution hall, a hallway led to various rooms, including one with internet servers. A secret door took ten seconds to open and led to a distribution hall with a freight elevator, staircase, and ventilation ducts. These went down twenty floors to the nuclear shelter, sixty meters below the surface. It had all supplies to keep twenty people alive for five years. Power came from a small modular nuclear reactor.
Ronald practiced security drills regularly. He timed the escape to the nuclear shelter: 282 seconds if in the house. Two and a half minutes to reach the elevator gates, forty-two seconds to activate the shelter, one minute to descend. Thirty seconds were needed to open and close the vault-style door. He knew a nuclear blast above could trap them if the door remained open. Missiles would likely come from Russia, Europe, or the US. Detection radars reached 200 kilometers, giving thirteen minutes for subsonic missiles, less than a minute for hypersonic. A satellite and early-warning showed launches on a phone, triggering alarms.
Mr. Walker had spent a fortune building the complex, completed a decade ago, designed with his daughter fifteen years prior. Maintenance ran automatically with AI and robots. From outside, it looked like a lakefront cabin with a dock and sailboat.
The living room opened onto a wooden terrace. Under the eaves, an outdoor space had a leather sofa and two ivory armchairs around a marble table. On it lay a light green pendrive and a binder labelled ‘DRAFT.’ Nearby, a half-full whiskey bottle and two Czech crystal glasses.
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