2021 Defense Act signals turning point for Congress and PNT Senate poised to join House this week and override Trump’s veto The U. S. Congress, especially the Armed Services Committees, have long been concerned about GPS and positioning, navigation, and timing (PNT) issues. Over the last two decades Congressional hearings, demands for reports, and investigations have dealt with acquisition, contingency plans for when space is not available, deliberate interference, and a host of other issues. While these all evidenced Congress’ interest and concern, they were relatively passive measures. The NDAA for 2021 seems to finalize Congress’ transition from an interested observer, mostly on the sidelines, to an active player in national PNT issues and policy.