Because they will be back-paid when the government reopens and if they stop showing up then they will be fired. Now, you could ask: won't they be able to get a job back later, who knows.
I guess the people in this instance realise they're an essential service for the economy and that without them, a lot of people could actually die. So they probably see their role as being more than simply working for the people of low integrity.
In which case it’s their duty to end it. But I don’t see a million people marching in Washington, I don’t see food deliveries failing to reach the White House. I don’t see airports simply close down.
Again, there's probably a sense of responsibility towards the people moving through the airports who otherwise would be facing much greater risk to their lives.
As a non American who's having to transit the country during this period, I've nothing but respect for the individuals who're actually doing their jobs and keeping everyone (including me) safe without getting a penny for this vital work.
They could go on a strike and bring all airlines to a halt, but as a brown skinned person, I would then be risking a visit to "Alligator Alcatraz" or some other demented place because I failed the leave the country on the day I was supposed to. So again, glad they're not doing that.
[1]: https://www.nytimes.com/2025/11/07/travel/shutdown-air-traff....
[2]: https://www.nytimes.com/2025/10/20/us/politics/shutdown-air-....
[3]: https://www.theguardian.com/us-news/2025/oct/28/air-traffic-...