Guest Stars Gary Jones as Sgt. Walter Harriman Tony Amendola as Master Bra'tac Garry Chalk as Col. Chekhov David Hewlett as Dr. Rodney McKay Neil Denis as Rya'c Christopher Kennedy as Dr. Larry Murphy Co Starring Dan Shea as Sgt. Sylvester Siler Robert Clarke as Scientist Aleks Paunovic as Shaq'rel Robert Thurston as Scientist Aaron Douglas as Jaffa Dale Hall as Jaffa Commander Grizz Salzl as Jaffa Uncredited Peter Kufluk as MSgt. Connor Martin Wood as Major Wood Hector Navarro as TSgt. Kraushaar Hugo Steele as Jaffa Guard Greg Zach as Jaffa Jacquie Janzen as Airman
