Sam Shepard

Chuck Yeager

Scott Glenn

Alan Shepard

Ed Harris

John Glenn

Dennis Quaid

Gordon Cooper

Fred Ward

Gus Grissom

Barbara Hershey

Glennis Yeager

Kim Stanley

Pancho Barnes

Veronica Cartwright

Betty Grissom

Pamela Reed

Trudy Cooper

Scott Paulin

Deke Slayton

Charles Frank

Scott Carpenter

Lance Henriksen

Wally Schirra

Donald Moffat

Lyndon B. Johnson

Levon Helm

Jack Ridley / Narrator

Mary Jo Deschanel

Annie Glenn