Longrack was a Lyran crewmember of the Stoneship in 2402, presumably working in engineering.
In his first (and only) away mission, he took part in a forestry operation in order to fund the equipment required to respect the Prime Directive. Once the operation was fully funded, he used alcohol magic to battle a family of dragons, riding a broomstick, which was his undoing as a redshirt. (Star Trek: The Stoneship Files: "Alcoholic Massacre, Part I")