Engineering services and technical consultation in the field of weapon system performance analysis of sensors/seekers, aerodynamics, guidance and control, target discrimination, endgame performance, and command and control; technical testing for others, namely, modeling and simulation with emphasis primarily on engineering level simulations including all digital simulations, system software in the loop simulations, and hardware in the loop simulations; technical consulting in the field of information systems technologies, namely, distributed simulations/data management systems, visualization techniques, high performance computer systems, and network integration; and data mining and pattern recognition applications services, namely, technical analysis of radar signatures from weapon system tests; Providing on-line non-downloadable computer software for creating searchable databases of information and data; computer software consultation; computer software development; computer software design for others; computer software design, computer programming, and maintenance of computer software; consulting services in the field of design, selection, implementation and use of software systems for others; customization of computer software; Consulting in the field of information technology, computer security, technological consultation in the technology field of enterprise information technology; information technology consultation; design, development, and implementation of software in the fields of cyber security and information assurance, data center management, enterprise information technology, and development of secure infrastructure; Systems engineering; computer systems simulation and analysis; computer modeling services; virtual testing of new product designs using computer simulations; simulation and the mathematical modeling of airflow, fluid flow, optical phenomena, electrical processes, movement of physical objects, aerothermal processes, and the movement of natural and artificial objects; Scientific research and design services rendered to government and private industry in the areas of national security technology, national defense, design and integration, test and evaluation, logistics, facilities engineering, defense communications, industrial and business services, space transportation and exploration, space systems analysis, security systems and support, information and communications; Scientific research and related consulting services rendered to government and private industry in the areas of national security technology, national defense, design and integration, test and evaluation, logistics, facilities engineering, defense communications, space transportation and exploration, space systems analysis, security systems and support, information and communications, systems engineering, engineering analysis, systems simulation and analysis, modeling and simulation of physical phenomena, test planning, test requirements analysis, test results analysis, systems safety and survivability, environmental analysis, information systems management, software engineering services, systems integration services, database development, custom software design and development, manufacturing and production systems analysis and support