The Department of Defense, specifically the Department of the Air Force, is seeking contractor support services for the Precision Navigation and Timing (PNT) program through a presolicitation notice. The procurement aims to provide a range of support services, including modernization acquisition, sustainment planning, program startup, manpower analysis, and cybersecurity, among others, to enhance PNT systems and their integration with various platforms and weapons. This requirement is critical for ensuring the effectiveness and reliability of navigation and timing systems, which are vital for military operations. The Request for Proposal (RFP) will be issued as a sole-source contract to Serco Inc, extending an existing contract for 12 months, with Kira Mullins as the primary contact for inquiries at kira.mullins@us.af.mil.