Mr. Rich
Dr. Ted Johnson
Director
Geologist #1
Dr. Brad Wednesday
Bennett
Carter
(archive footage)
Jim
Dr. Orin Hillyard
Maj. Greg Donahue
Dr. Marsh Tracy
Shaving Man
Maj. Benson
Jonn Sonnenberg
Marsh Connors
Dr.Joseph Farady
Cmdr. Charles Ernest Prescott
Dr. Cliff Mitchell
Carruthers
Major Steve Cummings
Simon Lewt
Man Exiting Airplane (uncredited)
Johnson
Tom Markel
Billy Lang
2nd Lt. Tim Vernon
Marsh Walker
Bruce Reeber
Steve Davis
Blivens Scott
Lance Beaufort
Johnny Long
Gunther Wyckoff
Rod MacDougall
Henry Shanway
Narrator (adult John Kenyon) (voice)
Jim Layton
Tolbert McCoy
Herbert Fields
Capt. George Washington Bellpepper Lee
Staff Sgt. 'Mac' McKeen
The Sailor
Ben Mac Bean
Brandon Reynolds
Tex Barton
Joe Fisher
Jim Griggs
Jimmy Holden
Ens. 'Snake' Gardner
Jimmy
Bill
Ted Scott
Freddie Bilson
Roy Connors
