Design, engineering, research, development of, and testing of air defense missile systems and their components; technical consulting in the nature of design and development of missile systems and their components in the field of air defense missile systems; technical consultation services for others, namely, the technical analysis and evaluation of the engineering of missiles in the field of post flight operations, operational flight support, and flight failure, all of the preceding in relation to missiles; technical consultation services for others, namely, the technical analysis and evaluation of performance of missiles, for the purpose of quality control, in the field of post flight operations, operational flight support, and flight failure, all of the preceding in relation to missiles; technical support services, namely, troubleshooting in the nature of diagnosing problems with missile guidance testing equipment; repair and maintenance of simulation software and data recorded on software; repair and upgrade services for missile software; preparation of engineering reports for others comprised of missile technical and administrative data and documentation