Anticipate rear area events. Because the weather greatly affects terrain, terrain and weather analysis are inseparable factors of intelligence. You must consider the influence of terrain on rear area combat support, combat service support, and security operations. Combat support and service support units will have extended LOC with limited assets. See Setting Up Local Security in Chapter 3.
Key terrain is determined by the mission, the echelon, the enemy, and the situation.
Potential mobility corridors into the rear area that could be used by aerially-inserted irregular forces or ground forces. Consider observation and fields of fire for rear area defense, security, and the protection of critical assets. Agents and special operations forces must see their targets. Airborne and air assault troops must have visual approach to their targets or LZs. Various weather effects have a telling effect on tactical operations.