Design, development and modification for others in the field of engineering, namely, design of airplanes, unmanned aerial vehicles and structural parts therefore; performing specialized engineering assessments in the field of unmanned aerial vehicles; scientific and technological research, analysis and design in the field of electrical and mechanical apparatus and aeronautics, unmanned aerial vehicles, weapon development, ordnance development, and military test and training equipment, including air, ground, and sea equipment; industrial analysis and research services in the field of electrical and mechanical apparatus and aeronautics, unmanned aerial vehicles, weapon development, ordnance development, and military test and training equipment, including air, ground, and sea equipment; design and development of computer hardware and software relating thereto for others; repair of system integrating software interface