text: ________________________________________________________________________________ FM 2-22.3
  complex connection between organizations, personal connections, and
  linkages.
  12-31. The analysis diagram in paragraph 12-29 shows a connection between
  organizations and events to which an individual belongs or is associated. In
  this case, a national government runs a training camp for terrorists. Ahmed,
  a member of the terrorist group, is associated with the training camp, and
  participated in the bombing attack. From this diagram, one can link the
  supporting government to the bombing through the camp and the
  participant.
  12-32. When, as is often the case, an organization or incident depicted in a
  link analysis diagram contains the names of more than one individual, it is
  not necessary to draw a solid line between those individuals to indicate
  connectivity. It is assumed that individual members of the same cell or
  participants in the same activity know each other, and the connection
  between them is therefore implied. If the persons are not mutually
  associated, they cannot be placed in the same “box.” Another solution must
  be found to depict the situation; that is, show the persons as associated with
  a subordinate or different organization or activity.
  12-33. A final set of rules for link analysis diagrams concerns connectivity
  between individuals who are not members of an organization or participants
  in an activity, but who are somehow connected to that entity. Two
  possibilities exist: First, the individual knows a member or members of the
  organization but is not associated with the organization itself; or second, the
  person is somehow connected with the organization or activity but cannot be
  directly linked with any particular member of that entity.
  12-34. In the first case, the connectivity line is drawn only between the
  persons concerned as depicted here:
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