The Department of Defense, specifically the Department of the Navy through NAVSUP FLT LOG CTR NORFOLK, is seeking qualified sources for Enterprise Systems Security Support Services to ensure the integrity and availability of Precise Time and Astrometry (PTA) systems critical for Department of Defense operations, including GPS. The procurement aims to establish a robust security framework that includes infrastructure and personnel, such as transport engineers and cyber security operators, to maintain system functionality with an uptime exceeding 99.999%. This initiative is vital for the reliability of PTA data products, which are essential for navigation across various DoD systems. Interested parties must submit their responses to the Request for Information (RFI) by 12:00 PM EST on April 24, 2025, to the primary contact, Gil Dobison, at gilbert.k.dobison.civ@us.navy.mil. The anticipated contract will be a Firm Fixed Price Indefinite-Delivery, Indefinite-Quantity (IDIQ) contract, with a base period from April 6, 2026, to April 5, 2027, and four option periods.