Tasks include: Applies finance and budget-related laws, regulations, policies, precedents, principles, concepts and methodology used in the DoD Planning, Programming, Budgeting and Execution System (PPBES) in the timely execution of Research, Development, Test & Evaluation Navy (RDT&EN), Other Procurement Navy (OPN), Shipbuilding and Conversion Navy (SCN), and Operations & Maintenance Navy (O&MN) appropriations. Prepares supplemental budget documentation, including midyear requests, reprogramming requests, presentation materials, white and issue papers, and spreadsheets for the management of acquisition, business and infrastructure programs and events.