"Subversive elements, whether insurgent, terrorist, or criminal, all require a communication system to coordinate and control operations. The development of a clandestine communication system requires special considerations in the development of the nodes and links that are responsible for the transmission of information. A closure analysis of these processes, professionally referred to tradecraft, assists in the planning and development of a communication system to support or counter subversive operations. This thesis analyzes tradecraft as a communication system to identify the constraints and opportunities to which different technologies have proven useful and the strengths and weaknesses of the same."
Naval Postgraduate School, Dudley Knox Library: http://www.nps.edu/Library/index.aspx