With experience, soldiers who possesses above average vision may use nonsystematic
methods of search. From the following select one that works best:
Combination of the two systematic methods.
Search of the horizon in the shape of an oval to 20 degrees above the horizon.
General or random search of the horizon.
from rotating propeller blades, smoke trails and dust; and excessive movement of tree tops and
bushes in a particular area. They should listen for noise from propeller blades or aircraft engines.
It is likely that these indications will be detectable before the air platform is plainly visible. The
sooner the air platform is detected, the more time the unit will have to react to an air threat