Self
Grandpa James
Dennis
Dr. Philip Sumrall
Mark Miller
Goldberg (uncredited)
Casey Keddington
Buster Schuler
Rollin H. Parker - Rains' Gopher
Eric Farrell
Cliff's Father
J.R. "Bob" Mitchell
Sidney Lassiter
Michaud
Hersch Lawyer
Richard Cory
David Walker
Frank Ridell
Judge Hilburn
Yancy
Frank Darnell
Dr. Connors
Raymond Miller
Ed Saxe
Harris Wiley
Gordon Holc
Danny Leggett
Mayor John Clum
Detective Clark
Dr. Friedman
Henry Cragin
Barlow
Cliff Ripley
Bob Altschuler
Sergeant Don Bell
Jack Moseley
Colonel Pierce Grissom
Howard Hughes
Sergeant Nicholas
Daniel
Henry
Major Beckett
Curt Mitchell
Dr. Gene Clifford / Jerry Blake
Bob Anderson
Frank Devereaux
Jay Floyd
Dr. Frank Linden
Alex McSween
Connie Priest
Jerry
Wes Travis
Bruce
Jerry Blake
Maj. Tom Patterson
Launch Director
Dr. Wallace
Sheriff Joe Haller
Jim Barrett
Dr. Redding
Claude Harbrough
Detective Buck McGovern
Buddy Kelsey
Freeman Smith
Colonel Thomas Rhodes
Parent
Captain Minardi
James Roosevelt
