New types of mechanical devices

If you watch “The Closer” or “Major Crimes”, you see a team of LA police officers investigating.  One of the members of the group is “Buzz”.   He is not the usual officer but more of an equipment technician.  He takes various types of pictures and can modify, enlarge, slow down or speed up their showing. He is in steady demand, both at a crime scene and later back at the station.  In several fields of work, new and valuable equipment can assist in the analysis of events in ways that unaided police cannot.  In many fields, new types of technology accomplish things faster, more completely, more minutely with fewer errors than unaided humans can.