In precision registration, when two airbursts and two graze bursts are spotted, what HOB correction should be made?

In precision registration, the process involves making detailed adjustments based on the observed effects of munitions to ensure that subsequent fire is accurate. When you have two airbursts and two graze bursts, it is essential to analyze the height of burst (HOB) to determine if a correction is needed.

In this scenario, airbursts occur when munitions detonate in the air above the target, while graze bursts detonate very close to the surface. The presence of both types of bursts indicates that the initial settings for elevation might not be perfectly aligned for the target.

When two airbursts are observed, it generally suggests that the impact point is higher than desired. Conversely, the grazers indicate impacts that are lower than desired. This mix indicates an inconsistency and the need for elevation correction. In typical fire support protocol, an adjustment of "up 10" is considered appropriate based on the number of observed bursts and their types. Consequently, the required correction for aligning the fire support is an increase, specifically "up 10," to adjust the trajectory more accurately towards the intended target.