42 engineering and design in the field of aerospace and aircraft technology; aircraft modification; aircraft component and system fabrication and installation services; airworthiness certification services; maritime surveillance and reconnaissance services; software engineering, namely, airborne maintenance software development, airborne data acquisition, virtual radar control, and avionics systems installation and integration services; environmental services, namely, ice control management support, iceberg detection and reconnaissance, environmental observation and reporting; oceanographic data measurement, weather forecasting, environmental contingency planning, and environmental reports and studying services