the military. and daddy was awarded that gold star medal. after he passed away. >> reporter: the children of the fallen are known as gold star children. sierra's father, staff sergeant shane becker, was killed in iraq in april 2007. gold star children, a documentary premiering on the pentagon channel tonight, traces the story of sierra and her family. >> i sort of felt like the world almost was pressing down on me to make a decision sometimes, to make a decision whether to completely change my personality or just gloss over what happened or just act like daddy's here every day. >> reporter: now 14, sierra is hoping the film and her story will help other gold star children continue to heal. >> when i say something to a kid