Air traffic controllers like Eugene Air Traffic Controller Travis Jensen work to safely and efficiently direct aircraft through the national airspace system using radio communication and radar, which has evolved greatly from the early days of pilots navigating visually and basic flag signals. Controllers at the Eugene tower and radar approach control facility provide services to pilots flying under visual flight rules to enhance safety with advisories and assistance with navigation, terrain, and emergencies in the local airspace. Pilots are advised to communicate their requests and any aircraft issues to the controllers as early as possible to facilitate safe and optimal operations.