This movement is the 180 degree turn and is similar to the 90 degree turn studied previously, in that it more accurately reflected a street encounter where the suspect engages in a dynamic turn and actually discharges a weapon at the officer as they are turning. In this study the subject was instructed to start by facing directly at the camera/officer with the weapon in a concealed, bootleg position beside and behind the strong side thigh, point the weapon at the officer/camera and pull the trigger, and then turn and run away. As in the 90-degree study the motion was very dynamic, varied among subjects and sometimes covered quite a distance before the subject achieved a full square back position.