332312 Fabricated Structural Metal Manufacturing
332710 Machine Shops
332999 All Other Miscellaneous Fabricated Metal Product Manufacturing
333316 Projection Screens (I.E., Motion Picture, Overhead, Slide) Manufacturing
333318 Flight Simulation Machinery Manufacturing
334511 Flight and Navigation Sensors, Transmitters, and Displays Manufacturing
336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing
541330 Engineering Services
541990 All Other Professional, Scientific, and Technical Services
811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
76992200 Aircraft and Heavy Equipment Repair Services