text: _________________________________________________________________________________FM 2-22.3
  which they are planned to occur. The HUMINT collector will normally
  establish various CPRs throughout the questioning of the source.
  9-40. For certain sources such as friendly forces, tasked sources, or other
  instances where the starting and ending points of the mission being
  questioned are easily established, the first point of reference is normally
  where that source began the mission. For other sources such as detainees,
  line crossers, informers, and refugees, it is often more difficult to establish a
  “starting point.” In these instances the HUMINT collector uses a sequential
  approach to the map tracking. He establishes a point of reference that is a
  logical end point for the subject being discussed. This may be, for example,
  the point of capture for a detainee, the point where a line crosser entered the
  friendly force area, or where a refugee left the area of intelligence interest.
  Second and subsequent points of reference are established during
  questioning when the source mentions a disposition, activity, or location of
  interest that can be located on the map. The HUMINT collector locates the
  reference point on the map through direct questioning and terrain
  association. He uses leading questions as necessary to establish an exact
  location. He then establishes the route of travel.
  ESTABLISH ROUTES OF TRAVEL
  9-41. Once the CPR is established, the HUMINT collector questions the
  source until he has extracted all pertinent information on the CPR and its
  immediate surroundings. For past missions and activities, the HUMINT
  collector then establishes the route the source traveled between the newly
  established CPR and a previously established CPR and exploits the route.
  For future missions or activities, the route is established from the previously
  established CPR toward the future mission CPR.
  9-42. The HUMINT collector should establish the route traveled by
  determining the source’s direction and physical description of the route of
  travel. The description should include details such as surface on which the
  source traveled and prominent terrain features along the route of travel and
  the distance the source traveled or, in the case of future locations, would
  travel. The HUMINT collector should also identify any pertinent dispositions
  or any activities of military significance, belonging to the opposition forces,
  along or in the vicinity of the route of travel. For longer routes, the HUMINT
  collector may divide the route into segments for ease of questioning.
  IDENTIFY AND EXPLOIT KEY DISPOSITIONS
  9-43. The HUMINT collector must obtain the exact location and description
  of every pertinent disposition known to the source. This includes the
  locations established as CPRs and any other pertinent disposition
  established during map tracking. At a minimum, the collector should––
  • Establish a physical description of the disposition. The degree of
  fidelity will depend on the collection requirements. This may be as
  detailed as the physical layout of a room to the general description of a
  training area. This will include security measures and modus operandi
  at the location as appropriate.