Marine Lt. Johnson was a member of SG-3 and introduced in the episode, 1.05 "The Broca Divide". He was stricken by the disease of "The Touched" on his mission with SG-1 to the Land of Light (P3X-797). He already had a dislike for Teal'c and after becoming infected, he attacked Teal'c during the debriefing on the teams' return from the planet. Dr. Janet Fraiser was able to determine the cause of the disease and develop a cure.
--DeeKayP 04:33, 30 Dec 2004 (PST)