Kevin Elliot

Lieutenant Elliott is transferred to SG-17 after successfully proving his worth in an elaborative test for SGC recruits. (SG1: "Proving Ground")

All of SG-17 was killed on his first day of off-world duty, except for Elliott, in an attack on the underground Tok'ra by the Goa'uld. Elliott was saved only because of the implantation of the Tok'ra symbiont Lantash. (SG1: "Summit")

Lantash and Elliott gave their lives to save the rest of the team when they realized that Lantash did not have the strength to repair Elliot's injuries and save their lives. Elliott/Lantash were given a vial of Goa'uld poison, powerful enough to eliminate the entire occupied force, and, presumably, used it on them to allow SG-1 and Jacob Carter to escape. (SG1: "Last Stand")