Engineering services in the field of aeronautics; Testing and analysis of prototype flight hardware and software in the area of payload integration and flight operations for the purposes of ensuring functional system, mission reliability, and compliance with design and industry specifications; Mechanical design and testing, namely, design of mechanical components of prototype flight hardware and software; Electrical design and testing, namely, electronic and electrical systems design services and testing of prototype flight hardware and software; Technical research and development, namely, technical research in the fields of aeronautics and research and development of computer software in the fields of aeronautics, ground support equipment, computer hardware control, and aeronautics communications systems design, consulting services in the field of advanced technical engineering, and engineering design services in the field of construction services and payload integration for unmanned aircraft; Design of telecommunications apparatus and equipment