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MODEL RELEASED. Footprint recovery. Forensics officer photographing a footprint at the scene of a crime. He is using a light (right) to illuminate the print and create greater shadow. After taking the photograph, a cast will be made of the print. This is done to create a permanent record of the print, which can be studied in a laboratory. He is wearing a protective suit to prevent contamination of the scene. (KEYSTONE/SCIENCE PHOTO LIBRARY/JIM VARNEY/SCIENCE PHOTO LIBRARY)