things like that. one of the things that's very important in forensic technology is looking for and finding trace evidence. those may link the victim back to a particular location, a particular house or apartment or car. >> moving on to the second examination, dr. cory and the technician note the external details of the body to help identify the deceased. >> the body is a normally nourished female averaging 18 years. >> we look for general physical characteristics. >> the hair is brown of normal texture and grows up to 6 inches in a normal growing period. jewelry consists of the following items. >> the third external examination requires any medical treatment the victim has received. cpr, for example. while the fourth focuses on the injuries. >> oh.