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Jeff Morrow as Dr. Leslie Gaskell |
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Barbara Lawrence as Vera Hunter |
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George O'Hanlon as Dr. Arnold Culver |
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John Emery as Dr. Hubbell Eliot |
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Morris Ankrum as Dr. Albert Stern |
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Kenneth Alton as McCrary - The Pickup Driver |
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Jose Gonzales-Gonzales as Manuel Ramirez |
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Robert Forrest as KGTK-TV Newscaster |
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Baxter Ward as Second Newscaster |
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John Halloran as Lab Central Security Guard |
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Marjorie Stapp as Nurse |
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John Parrish as Gen. Perry |
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Don Eitner as Air Force Meteorology Sergeant |
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Ron Kennedy as Air Force Control Tower Sergeant |
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Gordon Mills as Sergeant |
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Rosa Turich as Manuel's Wife |
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Robert Shayne as Air Force General |
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Richard Harrison as Pilot |
| Directing | Kurt Neumann | Director |
| Writing | Lawrence L. Goldman | Screenplay |
| Writing | Irving Block | Story |
| Production | Irving Block | Producer |
| Sound | Paul Sawtell | Original Music Composer |
| Production | Kurt Neumann | Producer |
| Production | Jack Rabin | Producer |
| Sound | Bert Shefter | Original Music Composer |
| Camera | Karl Struss | Director of Photography |
| Art | Chester L. Bayhi | Set Decoration |
| Art | Walter M. Scott | Set Decoration |
| Production | Louis DeWitt | Producer |
| Art | Theobold Holsopple | Production Design |
| Editing | Jodie Copelan | Editor |
| Production | E.J. Baumgarten | Executive Producer |
| Costume & Make-Up | Richard Staub | Wardrobe Supervisor |
| Crew | Jack Rabin | Special Effects |
| Sound | James Mobley | Sound |
| Crew | William Reinhold | Special Effects |
| Crew | Irving Block | Special Effects |
| Crew | Menrad von Mulldorfer | Special Effects |
| Costume & Make-Up | Louis Hippe | Makeup Artist |
| Costume & Make-Up | Mary Tate | Wardrobe Supervisor |
| Production | Herbert E. Mendelson | Production Manager |
| Crew | Louis de Witt | Special Effects |
| Crew | Gene Warren | Special Effects |
| Art | Max Goldman | Property Master |
| Costume & Make-Up | Nadine Denks | Hairstylist |
