Production. Airplane maufacture, general. Inspectors at the Long Beach, California, plant of Douglas Aircraft Company, check all assembly work minutely to assure that dependable planes will go to our men at the front. Most important of the many types of aircraft made at the 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