Visible crew/equipment: Stage lights and a boom mic or filming crane are reflected on Miles' helmet when he is about to ride on the track.
Visible crew/equipment: A white stage light is reflected on the kettle when Stewart visits Denise at her place. (00:14:29)
Visible crew/equipment: When the police chases the car, the camera is reflected on the siren.
Visible crew/equipment: When Miles fails the stunt and falls, stage lights are reflected on his helmet. (00:47:21)
Chosen answer: Before he put the uniform on, he was a complete nobody, having the respect of no-one. Now that he's in uniform, he demands that people should respect him, and coupled with the powers of Martial Law (where looters can be shot on sight), takes the lack of respect too far and shoots them.
GalahadFairlight