Paul Hildreth looked at images from security cameras set up at schools in Fulton County, Georgia. He began watching a video of a woman walking inside one of the school buildings. The top of her clothing was bright yellow. Hildreth used his computer’s artificial intelligence, or AI system to find other images of the woman. The system put the pictures together in a video that showed where she currently was, where she had been and what she was doing. There was no security threat. But the short demonstration for The Associated Press showed what is possible with AI-powered cameras. Hildreth is emergency operations coordinator for the Fulton County School District. If a gunman were to enter one of his schools, he says, the cameras could identify the shooter’s position and movements, helping police to end the threat quickly.