| Name | Character | Episodes |
|---|---|---|
| Robert Prosky | Gen. Aleksey Rudenski | 2 |
| Katherine Helmond | Dorothy Longworth | 2 |
| Brian Keith | Secretary General Gorny | 2 |
| Rock Hudson | President Thomas McKenna | 2 |
| Jeroen Krabbé | Colonel Alexander Vorashin | 2 |
| Bob Minor | Trimble | 2 |
| Cathy Lee Crosby | Maj. Kate Breckenridge | 2 |
| James Hampton | Richard Hickman | 2 |
| Art Evans | Buford | 2 |
| Jerry Hardin | Gen. Philip Olafson | 2 |
| David Soul | Colonel Jake Caffey | 2 |
| Rick Fitts | Maj. George Devery | 2 |
| Harry Basch | Adm. Vernon Blanchard | 2 |
| Lee Wallace | Dr. Jules Farber | 2 |