Daryl Johnson has been a intelligence analyst for the U.S. government for over 20 years.  He was the senior domestic terrorism analyst at the Department of Homeland Security, Office of Intelligence & Analysis (I&A). During his time at DHS, Mr. Johnson wrote numerous sensitive intelligence reports and briefed a wide range of organizations including congressional staff; federal, state, and local law enforcement agencies; members of the intelligence community; colleges and universities; and other non-government organizations.  Prior to working at DHS, Johnson was a subject matter expert on violent antigovernment groups at the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF).

http://www.dtanalytics.org

https://rowman.com/ISBN/9781442218963

http://www.salon.com/2012/08/17/daryl_johnson_i_tried_to_warn_them/

http://www.salon.com/2012/08/28/extremism_in_the_army../