The airlines have blamed bad weather and a shortage of federal air traffic controllers, but the government says carriers have created the problem by pinching pennies.
Airlines, feds prep for flight interruptions as summer bookings soar
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The Department of Transportation said Buttigieg is visiting now that the U.S. Environmental Protection Agency declared the emergency phase of the crash to be over and the start of long-term cleanup efforts is underway.
Pete Buttigieg visits East Palestine, Ohio, train derailment site
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