Am assuming most people travelling shortly are up to date on all of this, but this might help
What the Government Shutdown Means to Travelers:
A federal government shutdown officially began this morning ,October 1, as a deadlocked Congress failed to reach an agreement on a short-term funding measure by a 12:01 a.m. ET deadline.
Here's what travelers need to know:
Air Travel: Is is safe to fly?
Airport security, Transportation Security Administration workers and air traffic controllers will remain on the job. Most employees in these areas are deemed essential, so they are not furloughed. Continue to follow Transportation Security Administration rules about liquids, shoes and other restrictions at the airport.
Most immigration, border and customs employees are also considered essential personnel, which means passport controls at U.S. borders and points of entry like airports and cruise ports should be unaffected by the shutdown.
Always give yourself time before going through security and check the status of your flight before departure.
National Parks & Museums:
National parks and national museums will be closed -- including the Smithsonian museums and National Zoo in Washington, D.C. Campers at national parks will be given two days to pack up and leave, according to National Park Service contingency plans.
Other popular government-run spots that would be closed include the Statue of Liberty, Alcatraz Island in San Francisco and Independence Hall in Philadelphia.