Production. P-51 "Mustang" fighter planes. One of the Army's new P-51 "Mustang" fighters in flight near the North American Aviation plant at Inglewood, California. This plant produces the battle-tested B-25 battle-tested B-25 "Billy Mitchell" bomber, used in General Doolittle's raid on Tokyo, and the P-51 fighter plane which was first brought into prominence by the British raid on Dieppe