<Li> FBI special agent </Li> <Tr> <Th> Years active </Th> <Td> 1970--present </Td> </Tr> <P> John Edward Douglas (born June 18, 1945) is a former special agent and unit chief in the United States Federal Bureau of Investigation (FBI). He was one of the first criminal profilers and has written books on criminal psychology . </P> <P> John Edward Douglas was born in Brooklyn, New York . A veteran of four years in the United States Air Force (1966--1970), he holds several degrees: a B.S. in sociology / physical education / recreation from Eastern New Mexico University; an M.S. in education psychology / guidance and counseling from the University of Wisconsin--Milwaukee; an Ed. S. in Administration and Supervision / Adult Education from the University of Wisconsin--Milwaukee; and a PhD in comparing techniques for teaching police officers how to classify homicides from Nova Southeastern University . </P>

When did the fbi start profiling serial killers