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By the Book

By the Book

January 23, 2019

On days that the human-occupied submersible Alvin dives, the operations team begins early in the morning with the first of many checklists. Their process covers each of the sub’s major systems and is designed to ensure the safety of the observers and pilot inside, as well as the success of the science mission. (Photo by Ken Kostel, Woods Hole Oceanographic Institution)

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