42 Computer consultation in the field of computer security; Computer hardware and software consulting services; Consultation in the field of physics; Consultation services in the fields of selection, implementation and use of computer hardware and software systems for others; Consulting in the field of information technology; Consulting in the fields of engineering and architecture; Engineering; Engineering services, namely, engineering for the Electrical, Electro-Optics, Radar, Sensors, and Space Systems; Management and consultation in the field of human factors engineering; Providing planning and engineering services in the field of information and communications networks; Research and development and consultation related thereto in the field of Intelligence, Surveillance, Reconnaissance, Sensors, and Space Systems; Research in the field of intelligence and security; Research services in the field of information and telecommunications technology; Technology consultation and research in the field of Intelligence, Surveillance, Reconnaissance, Sensors, and Space Systems; Technology consultation in the field of Intelligence, Surveillance, Reconnaissance, Sensors, and Space Systems