Manage the development, monitoring, and adjustments of security financial plans, including identifying new operational needs, preparing re-estimates, and ensuring alignment with executive priorities and agency requirements in cooperation with security leadership, finance teams, and program managers to ensure accurate forecasting and timely submission of updates. Oversee the full procurement, invoicing, and time-bound grant closeout processes for the Transit Security Grant Program (TSGP), ensuring compliance with federal funding requirements and accurate, timely financial reconciliation and reporting, ensuring all metrics defined in the Scope of Work (SOW) are achieved and that all awarded funds are fully expended by the MTA and its subgrantees.