[ Radiation detection instruments, namely, dosimeters; safety radios for unmanned ground vehicles; software used for flight test data analysis; gamma-ray imaging system used for non-invasive vehicle and cargo inspection; optical character resolution inspection systems for use in tollbooths, comprised of OCR readers, cameras, lighting, and computer communications software; radio transmission dosimeter and receivers; automated systems for identifying railroad cars comprising computers and computer programs for use in database management associated with identifying railroad cars; video surveillance system for surveillance of railways, railroads, or rail yards, comprised of cameras, microphones, audio and video recorders, and computer software; ] computer hardware system for air defense training; [ portable digital x-ray imaging apparatus for non-invasive examination and inspection for a wide variety of non-medical uses; computer software for inventory management; ] computer software that calculates interception paths to a target ballistic missile; computer software for the calculation of ballistic missile and reentry object trajectories; computer software for converting trajectory data generated by ballistic missile simulations; computer software that provides an environment where the user can shape a missile by entering numeric parameters; computer software used to simulate and analyze high frequency radar signatures; computer software to simulate, model, and analyze high frequency radar signatures [ ; computer software used for storing, indexing, searching, manipulating, and managing text databases ]