It was an interesting story and it certainly leaves you in suspense for most of the film. It was relatively enjoyable, but I had several gripes. For one, it portrays Christianity as a joke, but I don't expect anything else from Hollywood. Secondly, the ending is awful and insulting. All that death, struggle, and sense of hope are instantly made pointless in the end where the main character shoots his son and 3 other survivors as a way of suicide only for the military to suddenly show up a couple minutes later. It's like a punch in the gut.