Police crime scene scanner. Police officer using a laser scanner to record a crime scene with millimetre precision. The laser scans the room recording the position of every object such as blood stains of the walls, which can then be used to ascertain the angle of trajectory of a bullet. Photographed at the Institut de recherche criminelle de la gendarmerie nationale (IRCGN), the forensic science department of the French National Gendarmerie, France.