ABC11 was able to reach the control tower at RDU, and workers said they are fully staffed with no callouts impacting the flight tower.
But the longer the shutdown goes on it is always something in the back of their mind.
Some passengers landing at RDU say traveling during the shutdown they were worried about the potential for delays.
As callouts have already reached places like Burbank and other airports, national air traffic controller union representatives are calling for end to the shutdown.
"We need to bring this shutdown to a close so that the federal aviation administration and the committed aviation safety professionals can put this distraction behind us and focus on their vital work," says NATCA President Nick Daniels.
In a statement the FAA is warning, "there have been increased staffing shortages across the system. When that happens, the FAA slows traffic into some airports to ensure safe operations."
Back at RDU, passengers expressing their thanks for work people do keeping things running.
"I've done a couple years working at an airport so I know what they're going through," says Joe Pascual.
"Especially working for free, I don't know who would work for free honestly but you know some people have to passion to do it," said passenger Daniel Cortes.
And say their biggest concern is for the TSA agents and those working hard even when things are out of their control.
"Keep your heads up keep doing everything with a smile and hopefully we get this resolved as soon as possible," Pascual says.
SEE ALSO: Financial tips for employees, consumers while federal lawmakers try to work out a deal
Nonprofits brace for impact as a result of government shutdown