Unfortunately for the film's director, Joseph Losey, the eccentric, politically conservative Howard Hughes took over RKO while this film was being shot and, hating the film's pacifist message, did his best to sabotage it. Losey, however, managed to protect the integrity of his project. Screenwriter Ben Barzman, who was also later blacklisted along with Losey, would later recall that "Joe shot the picture in such a way that there wasn't much possibility for change. A few lines were stuck in here and there to soften the message, but that was about it". Barzman also remembered that 12-year-old Dean Stockwell was called into Hughes' office and Hughes told him that when the other children spoke of the horror of war, he should say, "And that's why America has gotta have the biggest army, and the biggest navy, and the biggest air force in the world!" According to Barzman, little Stockwell was so in sympathy with the film's message that he dared to respond, "No, sir!" Even after Hughes started to scream at him, the boy held his ground and refused to do it.