Guest Stars Gary Jones as Sgt. Walter Harriman Bill Dow as Dr. Bill Lee Robert Picardo as Richard Woolsey Tamlyn Tomita as Shen Xiaoyi Mark Oliver as Lapierre Tony Alcantar as Dr. Myers Andy Maton as Chapman Co Starring John Prowse as Col. Pearson Guy Fauchon as Dr. Pullman Jason McKinnon as Walker Sean Hall as SF Uncredited James Chutter as Airman Clark Colin Corrigan as SF Guard Nickolas Baric as Gamma Site serviceman Barry Nerling as Gamma Site serviceman Jason Hanmer as Airman Black
