David Keith (Mason Rand) Stephanie Niznik (Dr. KC Czaban) Ryan O'Neal (Allen Lysander) Brian Thompson (Captain Tower) Steve Bond (Colonel Tell) Craig Wasson (Hudson) Michael Cavanaugh (Williams) Shannon Lee (Pamela) James Avery (Dr. Solomon Holt) James Hong (Ambassador Po) Joseph Patrick Kelly (Control Tech (as Joe Kelly)) Donald Li (Chinese Scientist)