When the third kid started to run, he was wearing a helmet, when the camera cut over to the next angle, he wasn't wearing it anymore.
Ar approx 33:39 you see the big bad trying to sneak up on hondo with his pistol held out in front of him. you get a good view of it and see that it is a 1911 style pistol and the hammer is not cocked. The gun will not fire like this as it is a single action only pistol.