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On the Threshold of Space (1956)

Genres: Drama

In the early stages of the space program, Capt. Jim Hollenbeck undergoes any experiment needed to ensure success in the new Air Force branch -- even though he's not required to be a subject in the tests. Always remaining a constant source of support, his wife, Pat, accepts his unwavering commitment to scientific progress. When Maj. Ward Thomas becomes the new head of the program, Hollenbeck must convince him of the necessity of taking the extra steps.

• Guy Madison as Capt. Jim Hollenbeck
• Virginia Leith as Pat Lange
• Dean Jagger as Dr. Hugo Thornton
• John Hodiak as Maj. Ward Thomas
• Martin Milner as Lt. Mort Glenn
• Warren Stevens as Capt. Mike Bentley
• King Calder as Lee Welch
• Walter Coy as Lt. Col. Dick Masters