In the fight scene, at the end of the movie, the camera is panning around and you can clearly see a camera with its operator between a group of the guys.
Contributed by: Daniel Griffett
In the fight scene, when they are on the ground rolling around you can see the camera man and sound man in plain view. The camera man has a flower shirt on. Not just a little bit of him showing, he is on the front row of the inmates watching the fight!
Contributed by: roman miranda
In the fighting scene, after Sean Penn tries to get the knife, you can see a cameraman watching the fight.