Production. Airplane manufacture, general. Member of the experimental staff at the Inglewood, California, plant of North American Aviation, Incorporated, observe wind tunnel tests on an accurate scale model of the B-25 ("Billy Mitchell") bomber. 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 on Dieppe