Columbia subject headings:
Aeronautics, Military--Research--United States.
Aeronautics, Military--United States--Forecasting.
Air power--United States.
Harvard subject headings:
Aeronautics, Military--Research--United States.
Aeronautics, Military--United States--Forecasting.
Air power--United States.
Princeton subject headings:
Aeronautics, Military--Research--United States.
Aeronautics, Military--United States--Forecasting.
Air power--United States.