There are four people in the image. The person on the left is wearing a white shirt and dark pants, standing near a metal detector. The person next to them is dressed in a dark jacket and light-colored trousers. The third person is wearing a dark jacket and light-colored trousers, standing behind the first two. The fourth person is wearing a red jacket and dark trousers, standing behind the second person. All individuals appear to be engaged in some form of activity related to security screening.