From which points is STZ generally calculated?

The standard TRA (Target Reference Area) or STZ (Strike Target Zone) is generally calculated from the furthest most extreme firing locations. This is crucial because it allows for the maximum potential impact area, ensuring that all possible ranges and trajectories of the weapon are considered in the planning and execution phases of artillery or close air support. Calculating from the extreme firing locations helps in determining the boundaries within which the strike or engagement is most effective, while also ensuring safety zones for friendly forces and minimizing the risk of collateral damage.

Identifying the firing locations as your baseline provides a comprehensive understanding of how far the strike can reach and what areas might be affected. This consideration is particularly important for operational planning and coordinating with other units in the field, as it allows for an effective understanding of the engagement's scope. By setting the STZ from these locations, it enhances the accuracy and efficiency of the fire mission, while appropriately distributing resources and managing potential impacts.

On the other hand, calculating from the highest points of the range, the nearest observation point, or the center of the target area may not provide the necessary breadth for effective range and impact assessment, potentially leading to errors in operational planning and execution. Each of these alternatives would have inherent limitations in scope and safety