PTSD opinion.

Chris Kyle.

It was an American sharpshooter and military belonging to the SEALs United States Navy, famous for being the most lethal sniper in US military history. He suffer Post-traumatic stress disorder (PSTD),because he leave a traumatic event that was the Irak war. This problem affect his life and the people that so round him.

Throughout the trailer you can see the protagonist's emotional change as returns from his mission in the Irak war. These emotional changes affect not only the protagonist but his family life with his wife and children.