There would be service cuts, too. National Parks, including Fort McHenry in Baltimore, and federal museums such as the Smithsonian Institution, the National Gallery of Art and the National Zoo in Washington would close. Social Security, Medicare and Medicaid checks would continue to go out, but services such as Social Security card replacement would be suspended. Post offices would remain open. IRS walk-in centers would be closed. Air travel would not be affected and federal courts would remain open for at least 10 days.