Ducommun Incorporated provides engineering and manufacturing products and services primarily to the aerospace and defense, industrial, medical, and other industries in the United States. It operates through two segments, Electronic Systems and Structural Systems. The Electronic Systems segment offers cable assemblies and interconnect systems; printed circuit board assemblies; higher-level electronic, electromechanical, and mechanical components and assemblies, as well as lightning diversion systems; and radar enclosures, aircraft avionics racks, shipboard communications and control enclosures, wire harnesses, surge suppressors, conformal shields, and other assemblies. It also supplies engineered products, including illuminated pushbutton switches and panels for aviation and test systems; microwave and millimeter switches and filters for radio frequency systems and test instrumentation; and motors and resolvers for motion control. In addition, this segment provides engineering expertise