Columbia subject headings:
Denmark--Defenses.
North Atlantic Treaty Organization--Armed Forces.
Norway--Defenses.
United States--Armed Forces--Denmark.
United States--Armed Forces--Norway.
Harvard subject headings:
Denmark--Defenses.
North Atlantic Treaty Organization--Armed Forces.
Norway--Defenses.
United States
United States--Armed Forces--Denmark.
United States--Armed Forces--Norway.
Princeton subject headings:
Denmark--Defenses.
North Atlantic Treaty Organization--Armed Forces.
Norway--Defenses.
United States--Armed Forces--Denmark.
United States--Armed Forces--Norway.