O'Donnell is a Senior Airman in the United States Air Force stationed at Homeworld Command. He was assigned to guard sweep the base with a Geiger counter to make sure the Lucian Alliance had not placed a naquadria bomb in the base. He was killed when the Tel'tak crashed into Homeworld Command and his body was discovered by MSgt. Ronald Greer and Camile Wray. (SGU: "Alliances")