A holistic approach to the provision of resilient and secure communications, navigation, and surveillance for the 21st century national airspace system through - improved L-band utilization -

•The L-Band ARNS spectrum is extremely valuable! •It is best to look at the needs of Secure Communications, Navigation, and Surveillance (S-CNS) to support safety and security and efficient air traffic management holistically •Accommodating communications capability through more efficient use of the L-band spectrum is achievable without impacting any of the existing navigation or surveillance services •Collaboration between the communications, navigation, and surveillance communities is essential!!! - all must come out as winners in the final outcome!