TUCSON, Ariz. — Surveillance footage shows officers responding within seconds to take down a mass shooter, AZ Family reported. The July 19 incident unfolded after two groups argued outside of a restaurant, court documents obtained by AZ Family state. | RELATED: Choose the right real-time policing model for your agencyNine people were wounded in the shooting, AZFamily reported. About eight seconds after he stopped shooting, officers arrived on the scene and shot the suspect. Officers can then be seen rendering aid to the suspect and rushing to help gunshot victims.