Columbia subject headings:
Defense contracts--United States.
United States--Appropriations and expenditures.
United States. Department of Defense--Appropriations and expenditures.
United States. Navy--Procurement.
United States. Navy--Weapons systems.
Harvard subject headings:
Defense contracts--United States.
United States--Appropriations and expenditures.
United States. Department of Defense--Appropriations and expenditures.
United States. Navy--Procurement.
United States. Navy--Weapons systems.
Princeton subject headings: