2. Assuming the stance:a. When assuming the firing stance, the head must be held as level as possible, so that the shootercan see the target directly in line with the arm and sights. It is necessary to take all steps toeliminate the tilting of the head to the right or left or an excessive tilting forward. It is notnecessary to look sideways or to look at the sights from beneath the eyebrows. The head shouldnot be pushed forward closer to the rear sight; neither should the head be tilted back excessively.This causes undue tension upon the neck muscles and, as a consequence, a slight movement ofthe head develops from fatigue. This may hinder the maintenance of perfect sight alignment.