Design services, research services and development and modification for others in the field of engineering, namely, design of airplanes, aircraft, unmanned aerial vehicles (UAVs) and structural parts therefor; performing assessments of specialized engineering and operational issues 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 (UAVs), 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 (UAVs), 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; technical engineering and design services in the field of intelligence gathering, surveillance and reconnaissance; technical support and assistance, namely, troubleshooting of computer hardware and software problems and providing technological advice in the aeronautical field; technical support services, namely, troubleshooting of computer hardware and software problems and providing technological advice in the operation of aircraft, airplanes, unmanned aerial vehicles (UAVs), aerial and ground control hardware, software, video and sensor apparatus, airborne surveillance and aircraft control apparatus, aerial and ground control hardware, software, video and sensor apparatus; technical support services, namely, troubleshooting of computer hardware and software problems and providing technological advice in the operation, maintenance, testing, installation and evaluation of unmanned aerial vehicles (UAVs), aircraft, airborne transportation, aerial and ground control hardware, software, video and sensor apparatus, airborne surveillance and aircraft control apparatus, aerial and ground control hardware, software, video and sensor apparatus; repair and maintenance of system integrating software interface