The Federal Aviation Administration has identified 40 major airports across the U.S. that will have flight capacity gradually slashed from Friday as a result of the government shutdown.

Why it matters: With the Thanksgiving travel rush weeks away, the cuts will hit some of the busiest airports in the U.S. — including Hartsfield-Jackson Atlanta International and Dallas Fort Worth International. • Transportation Secretary Sean Duffy warned of "mass chaos" stemming from staffing shortages as critical air travel staff feels the strain of missed paychecks.

Catch up quick: Duffy said Wednesday evening that 40 of the nation's "high-traffic" airports will see a 10% cut in air traffic if the government shutdown continues into Friday. • "This is going to lead to more cancellations," Duffy said

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