Charles Keith

Gregory Peck

Acting

Jim Pruett

Richard Crenna

Acting

Ted Dougherty

David Janssen

Acting

Clayton Stone

James Franciscus

Acting

Buzz Lloyd

Gene Hackman

Acting

Celia Pruett

Lee Grant

Acting

Teresa Stone

Nancy Kovack

Acting

Betty Lloyd

Mariette Hartley

Acting

Public Affairs Officer

Scott Brady

Acting

Air Force Systems Director

Frank Marth

Acting

Flight Director

Craig Huebing

Acting

Flight Surgeon

John Carter

Acting

Aerospace Journalist

Vincent Van Lynn

Acting

Mission Director

George Gaynes

Acting

Houston Cap Com

Tom Stewart

Acting

Air Force Titan Specialist

Duke Hobbie

Acting

Network Commentator

Walter Brooke

Acting

Launch Director

Dennis Robertson

Acting

Guest in Observation Room (uncredited)

Kenner G. Kemp

Acting