a high definition photo of a plumber at a trade show. He is in a manufacturer's trade show exhibit. There are several product displays and interactive screens, with other attendees engaging with them. He is the center of attention. There is a large physical 3D cutaway model of a commercial building, including the mechanical room on a stand in front of him. He is using a tablet computer as an augmented reality device. He is scanning the 3D model with the tablet and it is overlaying alerts and plumbing data on the screen. Other attendees are very interested in what he's doing.