42 Engineering and design in the field of aerospace and aircraft technology; aircraft component and system fabrication services, namely, , testing and analysis of aircraft component and system fabrication; software engineering, namely, airborne maintenance software development, development of software for airborne data acquisition, design of virtual radar control, and development of avionics systems; avionics systems integrations services, namely, integrating computer systems into aircraft; providing temporary use of online non-downloadable computer software, namely, surveillance software for the acquisition, receipt, storage and retrieval of airborne surveillance data; providing temporary use of online non-downloadable computer software and hardware providing a customized interface for control and support of radars; providing temporary use of online non-downloadable data management system software providing integrated data collection from on board sensors, systems integration, tactical navigation, and in-flight reporting functions; oceanographic data measurement and reporting