Rhonda Fleming, who is second billed, has no scenes with any of the cast members in the main location, the commercial jet. Her sporadic role, as the manipulating wife of Efrem Zimbalist Jr., mostly occurs in Zimbalist's flashback sequences as he's flying the jet fighter. Also: her and Zimbalist's swimwear-clad bodies shown in the poster artwork, embraced and kissing liken to the famous scene in From Here to Eternity (1953), also derives from a flashback sequence.