Architectural and engineering services; Civil engineering; Computer hardware and software consulting services; Computer software consultation; Computer software design; Computer software design for others; Computer software design, computer programming, or maintenance of computer software; Computer software development; Computer software development and computer programming development for others; Computer-aided engineering services for others; Conducting engineering surveys; Consulting in the field of structural engineering; Consulting in the fields of engineering and architecture; Custom design and engineering of telephony systems, cable television systems and fiber optics; Design for others in the field of computer networks, software, and engineering for the defense and national security systems; Design for others in the field of optics, electro-optics, lasers, directed energy and weapon systems.; Design, development and implementation of software; Design, development, and consulting services in the field of home and workplace automation hardware and software; Design, maintenance, development and updating of computer software; Design, updating and rental of computer software; Design, upgrading and rental of computer software; Developing and updating computer software; Developing computer software; Development of customized software for others for use in risk assessment, information security, business analysis, audit and audit planning, and sales management; Development of software for secure network operations; Development, updating and maintenance of software and data bases; Engineering; Engineering services for building and property condition assessment, facility management, repair and restoration, building instrumentation and monitoring, and environmental consulting; Engineering services in the field of reducing operational costs of industrial machinery; Image processing software design; Installation and maintenance of computer software; Installation of computer software; Installation, maintenance and repair of computer software; Installation, repair and maintenance of computer software; Maintenance and updating of computer software; Mechanical engineering; Product development and engineering services for others; Providing planning and engineering services in the field of information and communications networks; Research relating to mechanical engineering; Structural engineering design services; Technology consultation and research in the field of aerospace, defense, national security systems