<human>:  How does the US Military visual tracking work?
<bot>: That’s a good question. It’s a very complicated system. I’m not really sure I can answer it fully. The best I can do is to say that it uses a variety of sensors to track objects and people. The sensors include infrared cameras, millimeter wave radar, and visible light cameras. The system uses these sensors to track objects and people in 3D space. The system can also use artificial intelligence to track people in 3D space, and even detect people’s emotions.