Arizona police get killed on chase

Today in class we were talking about the latest news and one of my fellow students had brought up a shooting in Arizona that killed two policemen. The police were chasing after a vehicle that was involved in a drug operation and when the policemen got out of the car the suspects got out and shot both, killing them. The vehicle was then followed by helicopter and more police. When the vehicle finally pulled over the suspects got out and the other policemen shot them and they were also killed along with the police they had shot earlier in the event. This had involved two cops in separate cop cars, the suspects and then many other policemen later in the event.