Corporal Lee was one of the military personnel stationed in Icarus Base, under the command of Colonel Everett Young. In 2009, he and 80 others fled the base after an attack against the base, and evacuated to the Ancient ship Destiny. (SGU: "Air, Part 1")

Later in 2009, he was part of the team that traveled to an unnamed planet to hunt for the Lucian Alliance member Simeon. He helped Lt. Vanessa James, Weber, and Torres get back to the Stargate after they were injured by an explosive device that Simeon detonated. (SGU: "Malice")