And, they say, even veteran street cops like it. The action on the screen responds to the accuracy of the shots fired from the laser guns. In addition, an instructor at a console can control the scene. If he thinks the commands aren't effective, he can have the suspect turn and shoot. The system is designed to test not only marksmanship but also judgment.
Trainees watch the scenes unfold on the screen and then try to react properly.
That can be tricky. Some scenarios have identical beginnings and different conclusions. In one version of the incident, the suspect whirls around with a pistol in his hand. In another version, he turns around holding a wallet. You don't want to put lots of rounds down field where there may be civilians.