text: Chapter 5
  * The guarding force relieves other units in place as they move to the rear.
  * The guarding force establishes a position in-depth behind the main body and passes those forces through.
  MOVEMENTS INTO SECURITY AREAS FOR STATIONARY SECURITY MISSIONS
  5-84. The security force establishes stationary security mission in a similar manner. In deploying into the
  security area, the security force must address competing requirements; to establish the security area quickly
  to meet mission requirements, and to provide the necessary level of security for itself. The security force
  moves into the security area using one of the following three methods listed below:
  * Tactical road march.
  * Movement to contact.
  * Zone reconnaissance.
  Tactical Road March Method
  5-85. The fastest but least secure method of deploying is a tactical road march from the rear boundary of the
  security area to the initial positions. The security forces move to a release point on the rear boundary. From
  the release point, subordinate elements deploy to occupy initial positions, moving by the quickest means
  possible. This method is appropriate when the security force commander does not expect enemy contact, time
  is critical, or previous zone reconnaissance of the security area conducted by aviation units found no enemy
  in the security area.
  Movement to Contact Method
  5-86. In the second method, the security force conducts a movement to contact from an LD (usually the rear
  boundary of the security area) to the initial positions. This method is slower than a tactical road march but
  more secure. It is appropriate when enemy contact is likely, time is limited, the situation does not require
  detailed reconnaissance of the terrain, or aviation elements or other assets conducting zone reconnaissance
  forward of the ground element detect enemy forces in the security area.
  Zone Reconnaissance Method
  5-87. The most secure method for moving into the initial positions is for the security force to conduct zone
  reconnaissance from the security area’s rear boundary to its initial security line positions or the forward limit
  of the security area. Given adequate time, this method is preferred because it allows the security force to clear
  the security area and become familiar with the terrain that it may have to defend. The security force
  reconnoiters potential subsequent positions and fire support system firing positions as it moves to its initial
  positions. A zone reconnaissance is appropriate when time is available and information about enemy forces
  or terrain is unknown. While this technique provides information of tactical value on the enemy forces and
  terrain in the area, it also consumes time. Using air reconnaissance forward of the ground units increases the
  speed and security of the movement.
  MOVEMENT DURING MOVING FLANK SECURITY MISSIONS
  5-88. There are three techniques of occupying and moving in a flank security area for moving security
  missions. These techniques are based on how the security force crosses the LD—
  * Separately from the main body and deploys to perform the mission.
  * Separately from the main body, lead elements conduct a movement to contact.
  * With the main body and conducts zone reconnaissance out to the limit of the security area.
  5-89. Commanders should not require the security force to make its own penetration when it faces prepared
  enemy defenses. This may prevent or significantly delay the security force from assuming its duties. They
  often combine the three techniques described in paragraphs 5-90 through 5-92 (pages 5-24 through 5-27).
  Security Force Crosses LD Separately from the Main Body and Deploys to Perform Mission
  5-90. In this first technique, the security forces cross the LD separately from the main the body and deploy
  to perform the mission, as seen in figure 5-9 and figure 5-10 (page 5-26). The security force then conducts a