Андерсон Владимир - Abandoned world: the Awareness стр 7.

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Of course, the first execution in the history of Apollo 24 was assigned to security chief Bill Sterling. And he didn't even think about turning it down who better to do it than him. Who better than him to hold his nerve at the right moment. Not let up where he needed to be tough. Not overreach where he needed to be confident. Despite his age, Bill Sterling was the best man for the job. That's what the Curator thought, and that's what Bill Sterling thought.