Transportation Secretary and former reality TV star went on CNBC to speak with Joe Kernan about how the Republicans' government shutdown is affecting the air traffic system. Over the weekend, the airport in Newark experienced many long delays due to a shortage of air traffic controllers.

KERNAN: We need to match what we can do with safety. And that's, you know, I don't even like talking about it, whether the air is safe. And I'm sure you're doing it that way. You've got to cut the number of flights that were actually allowed to operate based on the safety you can provide. At this point, you'd say the air is just as safe as it was when the government was open because there's a half as many flights.

DUFFY: So that's the consistent question I get. Is the system safe? And you see more delays

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