plan for use, sustainment, and modernization of positioning, navigation, and timing (PNT) systems to meet operational requirements. This instruction reflects the policy and directions contained in all referenced documents listed in Enclosure K. a. This plan implements the Chairman of the Joint Chiefs of Staff (CJCS) joint systems responsibilities. It provides the policy and planning basis for DOD PNT requirements, compares requirements to existing technology, identifies performance shortfalls, highlights needed research and development, and provides long-term projections of anticipated capabilities. b. Service and Defense agencies ’ PNT requirements are validated in accordance with reference a. The resulting validated programs are reflected...