; and (ii) any progress of the working group towards developing processes and procedures for tasking, collection, processing, exploitation, and dissemination of data collected by future moving target indication systems. (B) Biannual briefings Not less frequently than biannually following the initial briefing under subparagraph (A), the working group shall provide to the congressional defense committees a briefing on the status of any moving target indication programs under development by the Department of Defense as of the date of the briefing. (C) Sunset The requirement to provide briefings under this paragraph shall terminate on the date that is five years after the date of the enactment of this Act. 1685. Positioning, navigation, and timing (a) Quarterly briefings on implementation of military-code compliant GPS receivers (1) In general Not later than February 1, 2024, and quarterly thereafter until the date specified in paragraph (2), the Co-Chairs of the Council on Oversight of the Department of Defense Positioning, Navigation, and Timing Enterprise, shall provide to the congressional defense committees a briefing on the status of the implementation of M-Code compliant GPS receivers through the Military GPS User Equipment program, including the status of increments 1 and 2 of such program and details regarding expected dates of M-Code compliance for all sea-, air, and land-based terminals across the platforms of each of the Armed Forces. (2) Termination date The date specified in this paragraph is the date on which the Secretary of Defense submits to the congressional defense committees certification that the increments 1 and 2 of the Military GPS User Equipment program have reached full operational capacity. (b) Treatment of positioning, navigation, and timing resiliency, modifications, and improvements program The Under Secretary of Defense for Acquisition and Sustainment shall treat the Positioning, Navigation, and Timing Resiliency, Modifications, and Improvements program of the Air Force (Program