Aviation must be safe, efficient and sustainable both at home and abroad, so the Federal Aviation Administration's (FAA) Air Traffic Organization (ATO) is committed to playing a leading role, and working collaboratively, to ensure the success of global aviation. The United States, Europe, and other countries across the world are modernising their air-traffic management (ATM) systems. As these efforts proceed, international coordination in developing interoperable ATM systems and procedures will be necessary to support a global aviation network and ensure the seamless transition of aircraft and aviation information across national borders. This book examines selected stakeholders' views on factors that might affect NextGen's global interoperability, the extent to which the FAA has established a strategy to effectively achieve NextGen's global interoperability, and actions FAA has taken to coordinate with other countries on global interoperability.