In this episode, the third of Season 5, Sgt. Larson was played by Jerry Doyle who is probably best known for appearing in 109 out of the 111 episodes of Babylon 5 (1993). In the previous two episodes of this Season, the guest star character Dr. Oberon Geiger was played by Peter Jurasik who is probably best known for appearing in 110 out of the 111 episodes of Babylon 5.