few people knew where he was or even how to contact him. Infrastructure cells Any clandestine or covert service, especially a non-national one, needs a variety of technical and administrative functions, such as: Recruitment/training Forged documents/counterfeit currency Finance/Fundraising Communications Transportation/Logistics Safehouses Reconnaissance/Counter-surveillance Operational planning Arms and ammunition Psychological operations A national intelligence service has a support organization to deal with services like finance, logistics, facilities (e.g., safehouses), information technology, communications, training, weapons and explosives, medical services, etc. Transportation alone is a huge function, including the need to buy tickets without drawing suspicion, and, where appropriate, using private vehicles. Finance includes the need to transfer money without coming to the attention of financial security organizations. Some of these functions, such as finance, are far harder to operate in remote areas (like the FATA of Pakistan) than in cities with large numbers of official and unofficial financial institutions and the communications to support them. If the financial office is distant from the remote headquarters, there is a need for couriers, who must be trusted to some extent, but who may not know the contents of their messages or the actual identity of the sender and/or receiver. The couriers, depending on the balance among type and size of message, security, and technology available, may memorize messages, carry audio or video recordings, or hand-carry computer media. These cells are socially embedded (less so than the core group, however), structurally embedded, functionally embedded (they are specialized into a domain), and knowledge base-specific (there does not seem to be a great deal of cross-training or lateral mobility in the organization). Such cells are probably subjected to a mixture of both positive and negative control ('do this, do these sorts of things, don't do that'). The leader of a military cell is responsible for training its members, and, when an operation is scheduled, selecting the operational commander, giving her or him the basic objective and arranging whatever support is needed, and then releasing her or him from tight control to execute the . Military leaders might have direct, possibly one-way, communications with their cells, or they might have to give Kim the messages to be transmitted, by means that Anton and Hassan have no need to know. The security structure also means that Hassan does not know the members of Anton's cells, and Kim may know only ways to communicate with them but not their identity. Kim