As the U.S. government teeters on the brink of a shutdown, which could occur on December 21, concerns are rising about the implications for holiday travel, social security payments, and various federal services. Travelers can expect longer lines at airports, particularly during the busy holiday season, as TSA warns that personnel may be affected. Additionally, inquiries are being made about how train services like Amtrak and postal services would operate in the event of a shutdown. While some services might face interruptions, social security checks are expected to continue without delay. As holiday plans shape up, many Americans are left wondering about how a shutdown could impact their travel and essential services.