42 Providing systems and software engineering and implementation services, namely, planning, design, development and testing of software programs and integration of new technologies with existing software programs for others; providing design, engineering, testing and evaluation of electronic and logistic support systems for others; providing engineering, design management and operation of research and development laboratories for laser and sensor technologies; providing basic research and exploratory and advanced development services for materials, sensors and flight dynamics technologies for others; developing computer simulation and modeling tools for others; providing information systems design services, namely, defining client requirements, analyzing design alternatives and planning implementation of information systems; developing and providing system life cycle support for custom computer software applications systems for others; providing design and development of computer hardware and software programs in the fields of national defense and security systems and providing computer simulation, modeling and/or analysis for information systems and government systems for others; providing telecommunications network design, implementation, security and operations for others