Production. Airplane maufacture, general. A noontime rest for a full- fledged assembly worker at the Long Beach, California, plant of Douglas Aircraft Company. Nacelle parts for a heavy bomber form the background. Most important are the many types of aircraft made at this plant are the B-17F ("Flying Fortress") heavy bomber, the A-20 ("Havoc") assault bomber and the C-47 heavy transport plane for the carrying of troops and cargo