(1) Direction. The gunner lays the gun by sighting in the desired direction, as previously described.
(2) Elevation. The gunner selects an aiming point on the ground and near the break in the uniform slope, and with a sight setting of the range to the selected point, lays the gun on that point and elevates it 2 mils by means of the elevating handwheel. See figure 6-37.
c. Dead Space. Dead space, as discussed in this section, is that portion of the FPL that cannot be covered by grazing fire. Streams, ravines, and small depressions in the ground may allow passage under the grazing fire along the FPL. This dead space must be covered by other weapons (see figure 6-38). The location of dead space along the FPL should be accurately determined. This can be done by walking the trace of the FPL. Dead space exists any time the center mass of a man's chest drops below the line of aim. If personnel are unable to move beyond the gun position, observation of fire both from behind the gun and from the flank will assist in the location of dead space. (See appendix G for more detail.)
d. Laying in the FPL. Specific details concerning laying in an FPL are contained in appendix G.
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