Production. Airplane manufacture, general. Women take over the operation of some of the heaviest tools at the Inglewood, Calfornia plant of North American Aviation Incorporated. Day and night, shifts of girl employees use this huge hydraulic press to form thousands of sheet metal parts for United Nations war planes. This plant produces the battle-tested B-25 ("Billy Mitchell") bomber, used in General Doolittle's raid on Tokyo, and the P-51 ("Mustang") fighter plane, which was first brought into prominence by the British raid in Dieppe