This category consists of supporting the application of engineering disciplines to technically support the research and development of new and existing Naval capabilities and systems, technically support development of significant alterations to existing systems, support integration and interface of existing equipment or software into different applications or platforms to support the warfighter, and support evaluation of foreign or non-developmental systems, equipment, and technologies. This category also includes all support required within the area of environmental engineering of U. S. Navy weapon systems and base related infrastructure.