Production. B-25 "Billy Mitchell" bombers. Inside the nacelle of a B-25 bomber, this North American employee at Inglewood, California, assembles the hydraulic system for the landing gear. In addition to the battle-tested B-25 "Billy Mitchell" bomber, used in General Doolittle's raid on Tokyo, this plant produces the P-51 "Mustang" fighter plane which was first brought into prominence by the British raid on Dieppe