Judy Woodruff:

And for more on what the government shutdown means in practical terms, an update now on the U.S. Coast Guard.

More than 42,000 Coast Guard personnel missed a paycheck earlier this month, making it the only branch of the U.S. military to work without pay. That's because the Coast Guard is funded by the Department of Homeland Security, whose funding is tied up in the shutdown debate.

Yet crews are still deploying on national security operations. Just this weekend, the crew of the cutter Bertholf departed Alameda, California, for a five-month patrol to the Western Pacific Ocean, due to heightened tensions with China. The crew and their families are under stress.

In a tweet, Coast Guard Commandant Karl Schultz wrote: "Our USCG members sail across the world to protect U.S. national interests, while their loved ones cope with financial challenges and no pay at home."

He also tweeted out this video produced by the Coast Guard. It included this message from Vice Admiral Linda Fagan, a Pacific area commander.