Other mistake: When the bunch of soldiers find Dr. Paul Foster, one of them removes the doctor's briefcase from the crack in his skull. In this scene, Foster's eyes are open and seem to be red. Before and after this scene, when you can see the eyes, they are clear white. The briefcase doesn't have any trace of blood on it, though it was in the bloody skull crack. The blood looks too reddish. If it is some hours old, it should look darker. (00:34:10)
Sarge: You against the war, Doonesbury?
Napoleon: Not all wars, Sarge, I just think the president lies too much.
Sarge: All presidents lie, asshole! That's their fucking job.
Napoleon: Yes, sir.
Sarge: No president has told the truth since Truman! And you know what he said?
Napoleon: No, Sarge.
Sarge: He said that the buck stops here.
Question: Isn't the National Guard supposed to be in the US only? Then why did the sergeant talk about them being in Kandahar?