Guest Stars Joanne Gilbert as Barbara Scott Robert Benevides as Capt. James Harrison Jason Wingreen as O.B.I.T. Operator Peter Breck as Senator Jeremiah Orville Konstantin Shayne as Dr. Philip Fletcher Jeff Corey as Mr. Byron Lomax Harry Townes as Dr. Clifford Scott C. Lindsay Workman as Dr. Anderson Alan Baxter as Col. Grover Sam Reece as Clyde Wyatt Uncredited William Douglas as The Helosian Steve Carruthers as Hearing Member
