The FAA and a group of European air navigation service providers signed a joint statement of purpose to work toward a “future interoperable aviation system that is operationally driven and technology enhanced.” Europe and the U.S. are both undertaking ATC modernization programs: Sesar (Single European Sky ATM Research) in Europe and NextGen in the U.S. Under the agreement, the parties will coordinate on areas such as systems implementation, program management and transitioning to these new systems.