text: Chapter 1
  Mobile targets must be tracked to maintain a current target location. Once a target is detected, targeting
  planning cells must also consider the need to track targets. Tracking targets requires a heavy commitment
  of limited information collection assets and resources. Assessing key targets pertains to the results of
  attacks on targets. This helps commanders and staffs determine if targeting objectives were met.
  Provides Mixed, Redundant, and Overlapping Coverage
  1-71. Commanders integrate the capabilities of limited assets to provide mixed, redundant, and overlapping
  coverage of critical locations identified during planning. The intelligence and operations staff work
  together to achieve balance. Commanders and staff continuously assess surveillance results to determine
  any changes in critical locations requiring this level of coverage.
  Surveillance Types
  1-72. The types of surveillance are—
  * Zone surveillance.
  * Area surveillance.
  * Point surveillance.
  * Network surveillance.
  Note: Forms of reconnaissance, as opposed to types of surveillance, are associated with
  maneuver units and missions.
  Zone Surveillance
  1-73. Zone surveillance is the temporary or continuous observation of an extended geographic zone
  defined by boundaries. It is associated with, but not limited to, a TAI or a NAI. Zone surveillance covers
  the widest geographical area of any type of surveillance. Multiple assets, including airborne surveillance
  assets and radar with wide coverage capabilities, are employed in zone surveillance.
  Area Surveillance
  1-74. Area surveillance is the temporary or continuous observation of a prescribed geographic area. It is
  associated with, but not limited to, a TAI or NAI. This area may include a town, a neighborhood, ridgeline,
  wood line, border crossing, farm, plantation, cluster, or group of buildings or other man-made or
  geographic feature. Unlike area reconnaissance, it does not include individual structures (such as a bridge
  or single building). Ground-mounted surveillance systems are particularly useful in area surveillance.
  Point Surveillance
  1-75. Point surveillance is the temporary or continuous observation of a place (such as a structure), person,
  or object. This is associated with, but not limited to, a TAI or a NAI. Out of all forms of surveillance, it is
  the most limited in geographic scope. Point surveillance may involve tracking people. When surveillance
  involves tracking people, the “point” is that person or persons, regardless of movement and location.
  Tracking people normally requires a heavier commitment of assets and close coordination for handoff to
  ensure continuous observation.
  Network Surveillance
  1-76. Network surveillance is the observation of organizational, social, communications, cyberspace, or
  infrastructure connections and relationships. Network surveillance can also seek detailed information on
  connections and relationships among individuals, groups, and organizations, and the role and importance of
  aspects of physical or virtual infrastructure (such as bridges, marketplaces, and roads) in everyday life. It is
  associated with, but not limited to, a TAI or a NAI.