Production. Airplane manufacture, general. A woman employee operated a pneumatic numbering machine in the sheet metal department of North American Aviation, Incorporated at Inglewood, California. All items are given index numbers. 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