What visual technique should be used when searching for an aircraft?
a. Sweep from side to side with the eyes covering the whole field of vision b. Search the sky portion by portion starting on the left
c. Pinpoint 10° segments of the sky and confirm before passing onto another d. Use a succession of small and rapid eye movements
a. Sweep from side to side with the eyes covering the whole field of vision b. Search the sky portion by portion starting on the left
c. Pinpoint 10° segments of the sky and confirm before passing onto another d. Use a succession of small and rapid eye movements