42 HARDWARE AND SOFTWARE ENGINEERING SERVICES FOR DESIGNING, TESTING, BUILDING, MAINTAINING, REPAIRING, AND UPGRADING ELECTRICAL, ELECTRONIC, AND COMPUTER EQUIPMENT, COMPONENTS, AND SYSTEMS FOR OTHERS IN A WIDE VARIETY OF APPLICATIONS INCLUDING MILITARY, DEFENSE, AND COMMUNICATIONS; [ CONSULTING SERVICES IN THE FIELDS OF ELECTRICAL, ELECTRONIC, AND COMPUTER SYSTEMS AND COMPONENTS, AND MATERIALS SCIENCE; ] CONDUCTING SCIENTIFIC AND TECHNICAL RESEARCH FOR OTHERS; TESTING SEMICONDUCTOR MATERIALS AND RADIATION DETECTORS AND DETECTOR MATERIALS