Jarhead out in Theatres!

I used to be a huge movie buff in high school and have not truly found the time to keep up with the latest and greatest... but yesterday I saw the movie "Jarhead." I grew up in the military and I thought that the movie was pretty close to reality, but the movie over all started out pretty good and then it kinda faded towards the end... I guess you could say that it "lost the plot" it ends oddly. The movie was made by the same director from the movie "American Beauty."