Airports across the U.S. are experiencing significant disruptions due to the ongoing government shutdown. The Federal Aviation Administration has reduced flights as some air traffic controllers who have gone without pay for weeks have stopped showing up for work. The Senate took a first step toward ending the shutdown Sunday, but final passage could still be several days away and experts have said it will take time for flights to go back to normal even after the government reopens. Over the weekend, airlines canceled thousands of flights, with more cancellations expected, including at major airports like Newark and Atlanta.