Which of the following is NOT a type of predetermined fire?

Predetermined fire refers to specific types of fire plans that are set before engaging the enemy, enabling units to deliver coordinated and effective fire without needing to establish new targets in the heat of battle. Among the options provided, point target fire is not classified as a type of predetermined fire.

Grazing fire is a method where the gun is oriented such that the projectile travels close to the ground, allowing effective engagement of targets without risking friendly forces. The final protective line is a form of predetermined fire that provides a defensive line ensuring coverage against enemy assault. Principal direction of fire designates the primary direction in which the weapon system is oriented for maximum effectiveness against anticipated threats.

Point target fire, on the other hand, is generally a more reactive type of engagement aimed specifically at targets as they become visible or identified. While it can be planned, it doesn't fall under the category of predetermined fire scenarios that are typically set beforehand in anticipation of enemy movements. This distinction is crucial in understanding how different types of fire support function in combat operations.