Lloyd Bridges

Charlie Englehardt

Jeremy Slate

Astronaut Capt. Rick Lawrence

Jim McMullan

Astronaut Ben Pelham

Morgan Paull

Astronaut Dave Anderson

Michael Link

Eli 'E.J.' Mackernutt, Jr.

John Carradine

Jacob Avril

Jack Callahan

Dr. Jack Smathers

Charles Conrad

Himself

Walter Brooke

Whitehead

Keene Curtis

Tom Estes

Edward Faulkner

Eli Mackernutt, Sr.

Jon Cedar

Hans Hartman

Barbara Faulkner

Mrs. Mary Mackernutt

Stephen Rogers

Joey Williams

Andrew V. McLaglen