Wilford Brimley

as Dr. Andrew McCallister

Michael Ironside

as Capt. Neal Braddock

Martin Balsam

as Alexander Rostov

Damir Andrei

as Col. Alexander Kalsinov

Tom Butler

as Maj. Kurt Steiner

Wendy Crewson

as Irene Tremayne

Scot Denton

as David Tremayne

Peter Dvorsky

as Mitch Carlino

Léo Ilial

as Dr. Phillipe Berdoux (as Leo Ilial)

Alan Jordan

as Jeffrey Kilbride

Jan Rubeš

as Gregory Denarenko

Cathie Shirriff

as Olga Denarenko

Kate Trotter

as Pamela Cooper

Nerene Virgin

as Dr. Margaret Leigh

Alberta Watson

as Dominica Mastrelli

Timothy Webber

as Guy Sterling

Arthur Hill

as Vice-President

Kate Lynch

as Eleanor

A.C. Peterson

as Vasilev (as Alar Aedma)

Gloria Carlin

as Dinah Greenberg

Barry Flatman

as Roarke

Richard Blackburn

as Captain

Cheryl Wilson

as Reporter

Bill Lake

as Technician

Clark Johnson

as Technician

Marc Gomes

as Technician

Margot Finley

as Technician

Dave Devall

as TV Announcer

Thick Wilson

as Man

Tom Masek

as Deputy

Vince Metcalfe

as Jenner