The guy wasn’t Heidi-he had a weapon, right? It’s a tough thing, for sure, but you got to cut out that staring.” (O’Brien 126).Kiowa was getting scared for O’Brien because of the way O’Brien was reacting towards the death.In this chapter, Tim O’Brien killed a Vietnam soldier with a hand grenade by throwing at him and is troubled with guilt and misery for what he has done . O’Brien is so confused with the guilt of killing a man especially who was a companion and their soldier that he cannot take his eyes off his body. Kiowa’s worry about the mental state of O’Brien, helps to determine and disclose the theme of friendship during the war because Kiowa has a true and genuine concern for the mental state health of his friend. Kiowa is trying to help O’Brien justify his actions and help him through the situation.Kiowa’s encounter or experience in the war allowed him to understand that Tim cannot dwell on what is done which also cannot be undone. He is doing everything he can to get Tim's attention so that Tim does not get himself in trouble or also face death because of the disturbance. This is an important friendship that Tim values throughout the war,beyond, and novel.Curt Lemon's death reveals all the true and pure emotions of Rat