Rolston was a hiker and mountain guide.

Rolston was hired by a Canadian team in the Yukon to guide their members to and from a helicopter pad to a campsite. Along with the others on the team, he witnessed an apparent Extraterrestrial biological entity encased in ice. He guided Arlinsky, Babcock and Fox Mulder to the site as well. One night, however, a man came and killed the team and Rolston was shot as well. He died while trying to get back to the helicopter pad. (TXF: "Gethsemane")

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