Police officers congregate due to a prison riot. MS of police officers holding shotguns. The police officers have guns, batons, and helmets. MS of a police officer wearing sunglasses and a hat while holding up his shotgun. CU of a police officer wearing a helmet and holding his shotgun. MCU of a police officer wearing a gas mask. MCU of a police officer preparing his shotgun. LS of police officers walking in a single file line away from the camera. MS of police officers marching like soldiers.