Image Credit: AFP via Getty Images As the U.S. government shutdown stretches into its fifth week, millions of travelers are beginning to feel uneasy about their upcoming holiday flights. With hundreds of thousands of federal workers furloughed, including TSA agents and FAA staff, airports across the country are already reporting longer lines, reduced staffing, and growing uncertainty ahead of Thanksgiving. Sean Duffy, the U.S. Transportation Secretary, said that if the impasse continues into next week, parts of U.S. airspace may have to be shut down to keep the system safe.