On the Threshold of Space is a 1956 Drama directed by Robert D. Webb, starring Guy Madison, Virginia Leith and John Hodiak. Historical depiction on tests done to prepare US for space travel.
^ Solomon, Aubrey. Twentieth Century Fox: A Corporate and Financial History (The Scarecrow Filmmakers Series). Lanham, Maryland: Scarecrow Press, 1989. ISBN 978-0-8108-4244-1. p250.
^ 'The Top Box-Office Hits of 1956', Variety Weekly, January 2, 1957.
^ On the Threshold of Space at the Internet Movie Database.
Much of the plot depicts the testing of downward firing ejection seats from B-47 Stratojet bombers that were conducted at Eglin AFB, Florida, initially between 7 October and 21 October 1953, when nine tests were conducted of the seat from a B-47 over Eglin's water ranges over the Gulf of Mexico, by the Air Proving Ground, at an altitude of 10,000 feet and various speeds. A second series of tests was also conducted beginning 8 July 1954 after refinements to the system. These tests were recreated in the film, shot at Eglin in 1955, with a different Stratojet from the one in the actual missions.