Columbia subject headings:
Aeronautics, Commercial--United States--Management.
Air Traffic Organization (U.S.)
Air traffic control--United States--Management.
United States. Next Generation Air Transportation System Joint Planning & Development Office.
Harvard subject headings:
Aeronautics, Commercial--United States--Management.
Air Traffic Organization (U.S.)
Air traffic control--United States--Management.
United States. Next Generation Air Transportation System Joint Planning & Development Office
Princeton subject headings:
Aeronautics, Commercial--United States--Management.
Air Traffic Organization (U.S.)
Air traffic control--United States--Management.
United States. Next Generation Air Transportation System Joint Planning & Development Office