Guest Stars Brett Cullen as Dr. James Martin Peter Stebbings as Seth Todman Kevin Tighe as General Stellina Rusich as Sharon Martin Co Starring Brennan Elliott as Tom Michael St. John Smith as Dean Irwin Gary Hetherington as Chief Davis Derek Lowe as Student John Innes as Teacher Sharon Alexander as Girl Hostage Garvin Cross as Lt. Jackson Andrew McIlroy as Hal Kaplan Bob Dawson as Mr. Walker Darcy Kirkpatrick as Communications Officer Derek Peakman as Professor Wylie Chris Nelson Norris as Captain Litvak Kate Martin as Kyra Azzopardi