For Heineman, that's one of the key takeaways.

对于海涅曼来说，这是一个关键要点。

Heineman used victims of war to play mourners.

海涅曼利用战争受害者扮演哀悼者。

As a producer of documentaries, Heineman wanted to give this film a real-life feeling.

作为纪录片的制片人，海涅曼想要给这部电影一种真实生活的感觉。