The Federal Aviation Administration (FAA) has announced a reduction in flight arrivals at Reagan National Airport (DCA) to improve safety and minimize stress on air traffic controllers after a fatal plane crash. The agency is currently investigating the accident, which resulted in the deaths of 67 individuals. As part of the ongoing safety measures, two runways at the airport have been closed, and a ground stop was briefly issued due to increased airport volume. The airport expects that runway closures will continue for at least a week, affecting numerous flights. Travelers are advised to stay informed about potential delays and changes to their itineraries.