The document provides an overview and progress report on NextGen, the FAA's modernization of the national airspace system. It discusses how NextGen is transitioning from a ground-based radar system to a satellite-based surveillance system to make air travel safer, more efficient, and less impactful on the environment. It outlines some of the key NextGen programs being implemented, such as Automatic Dependent Surveillance-Broadcast, Performance Based Navigation, and System Wide Information Management. Charts show the budget profile for NextGen and planned timelines for major program deliverables through 2015.