Angelina Jolie's WWII film Unbroken is very challenging

It is not easy to shoot for Angelina Jolie's WWII film Unbroken. The film's screenwriters Joel and Ethan Coen told The Independent's Radar magazine, out on Saturday, 'That movie is really a motherf***er ... a difficult production thing.' 'There is aerial combat stuff, dogfight stuff, and there is stuff on a lifeboat on an open sea.'

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