mechanisms, tunnels deep in the ground.... But no personnel. That was surprising—but I wouldn't waste time questioning my good luck. I followed a corridor, opened another door, massive as a vault, passed more halls, more doors. My footsteps made muffled echoes. I passed a final door and came into the heart of the Records Center. There were lights in the chamber around the grim, featureless periphery of the Central Vault. I set the valise on the floor, sat on it and lit a cigarette. So far, so good. The Records Center, I saw, had been over-rated. Even without my special knowledge, a clever locksmith could have come this far—or almost. But the Big Vault was another matter. The great integrating lock that secured it would yield only to a complex command from the computer set in the wall opposite the vault door. I smoked my cigarette and, with eyes closed, studied the vault. I finished the cigarette, stepped on it, went to the console, began pressing keys, tapping out the necessary formulations. Half an hour later I finished. There was a whine from a servo motor; a crimson light flashed. I turned and saw the valve cycle open, showing a bright-lit tunnel within. I dragged my bag inside, threw the lever that closed the entry behind me. A green light went on. I walked along the narrow passage, lined with gray metal shelves stacked with gray steel tape drums, descended steps, came into a larger chamber fitted out with bunks, a tiny galley, toilet facilities, shelves stocked with food. There was a radio, a telephone and a second telephone, bright red. That would be the hot-line to Washington. This was the sanctum sanctorum, where the last survivors could wait out the final holocaust—indefinitely. I opened the door of a steel cabinet. Radiation suits, tools, instruments. Another held bedding. I found a tape-player, tapes—even a shelf of books. I found a first aid kit and gratefully gave myself a hypo-spray jolt of neurite. My pains receded. I went on to the next room; there were wash tubs, a garbage disposal unit, a drier. There was everything here I needed to keep me alive and even comfortable until I could convince someone up above that I shouldn't be shot on sight. A heavy door barred the way to the room beyond. I turned a wheel, swung the door back, saw more walls lined with filing cabinets, a blank facade of gray steel; and in the center of the room, alone on a squat table—a yellow plastic case that any Sunday Supplement