The Federal Aviation Administration (FAA) employs about 13,800 air traffic controllers in more than 300 facilities across the United States. Ensuring adequate staffing and training for controllers is essential to maintain the safety of the National Airspace System, especially at the Nation’s busiest, most complex, and most critical facilities. As we have previously reported, FAA faces challenges with ensuring it has enough fully trained controllers at these critical facilities and with conducting oversight of staffing and training to maintain continuity of air traffic operations.