Visible crew/equipment: After John stops the blue van and tries to confront Jack, Yuri takes it upon himself to get out. As he opens the door of the van, a camera and some crew equipment is reflected in the door's window for a brief moment. (00:19:05)
Visible crew/equipment: When the truck spins the small blue car into the crash barrier, the camera turns to look back at the car. When it does, the camera operator and the bike it's on is in shot. (00:23:10)
Visible crew/equipment: When walking into the vault at Chernobyl, a cameraman is reflected in one guy's gas mask visor. (01:02:05)
Chosen answer: No. Bruce Willis (and thus, John McClane) is left handed. But guns are mostly designed for right handed people, so when he isn't holding a gun modified for him, it's easier to use it with his right hand.
Friso94