Shootout in front of the Dallas Police Headquarters

Movielike shootouts in front of the Dallas Police Headquarters. At the beginning it looked like a simulation, exercise but quickly we realized it was real. An armored van kept shooting a high caliber automatic gun at the main doors of the building. After a little, two officers approached the corner of the building on foot. They thought the shooting happened inside. Little did they know they were sitting ducks. Hard to see in the video but this was SUREAL