T’Lune was a female Vulcan who served Starfleet in the late-24th century. She was considered a solid engineer, but always wanted to run one more diagnostic, perform one more test.

In late-August, 2385, prior to the opening ceremony of Deep Space 9 (II), T’Lune covered for Chief Miles O'Brien at the main engineering console in the Hub during alpha-shift. She reported a minor power fluctuation in one of the backup mark-XIII fusion reactors during a standard testing, shutting it down for a team to look over. She added that prior to yet completing the diagnostic analysis the preliminary indicated a materials defect in one of the induction tubes. (ST - The Fall novel: Revelation and Dust)

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