Unthinkable

Ed Asner

Lou Grant

Robert Walden

Joe Rossi

Linda Kelsey

Billie Newman

Mason Adams

Charlie Hume

Jack Bannon

Art Donovan

Daryl Anderson

Dennis Price

Nancy Marchand

Margaret Pynchon

Allen Williams

Adam Wilson

Laurence Haddon

Paul Stolarsky

Hammer

Peggy McCay

Marian Hume

Ivan Bonar

Foreign Editor

Lane Smith

Dr. Lawrence

Warren J. Kemmerling

General Sutherland

Bonnie Bartlett

Claire

Michael Fairman

Senator

Matthew Faison

Moffatt

Gregory Itzin

Young Reporter

Bob Harks

Lecture Guest (uncredited)