DIA officials on Wednesday were bracing as the Trump administration ordered a reduction in air traffic at major hubs later this week.

DIA says it is working with federal agency to “understand specific impacts, including whether DEN will be one of the 40 airports affected.”

The Denver International Airport is seeking permission from the federal government to pay for the salaries of air traffic controllers amid news that the Federal Aviation Administration plans to reduce air traffic by 10% across 40 “high-volume” markets beginning Friday morning to maintain safety during the ongoing government shutdown.

The New York City area’s highest-volume airports, including JFK, LaGuardia and Newark, are among those potentially set to be affected by a 10% air traffic cut that the FAA is poised to impose amid the ongoing,

As air traffic controllers miss their first full paycheck, larger numbers of the workforce are calling in sick—forcing the Federal Aviation Administration (FAA) to slow the flow of traffic at some of the nation’s busiest airports.