Hagman is a captain in the United States Air Force and a member of Stargate Command.



Following Dr. Daniel Jackson's death and ascension, Hagman became a temporary member of SG-1 and accompanied the team on a mission to P2X-374 where it was revealed that the locals were primitives with no interest whatsoever in SG-1.

When they attacked, Hagman and an injured Colonel Jack O'Neill were forced to flee for the Stargate with Teal'c assisting them due to O'Neill having injured his knee.

During the return to Earth, Hagman was struck by a dart and fell unconscious although he later made a full recovery. However, and presumably on the recommendation of Major Samantha Carter, Hagman was permanently taken off SG-1 and reassigned elsewhere. (SG1: "Redemption, Part 1")

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