Ducommun Incorporated (NYSE: DCO) is a manufacturing company that supplies products, engineering, and support services to the global aerospace and defense industry. It manufactures structural and electronic components and subassemblies for a wide variety of commercial, military, and space aircraft, notably for the Boeing 737 NG and 777 airliners, the C-17 heavy lift cargo jet, the Apache, Chinook, and Blackhawk helicopters, and the Space Shuttle. It also provides engineering and program management services to the United States military, Homeland Security, NASA, and other government agencies.