An incoming Douglas Dauntless dive bomber makes a satisfactory approach to the flight deck of an aircraft carrier and the pilot gets the signal to cut his engine from the Landing Signal Officer.  The waving "paddles" of the Landing Signal Officer are the guides of incoming pilots, and their semaphored signals are final authority in all landings.  If the Landing Signal Officer is dissatisfied with the approach, he signals a "wave-off" and the pilot zooms up to go around again.