Columbia subject headings:
United States--Armed Forces--Procurement.
United States--Armed Forces--Weapons systems.
Warranty--United States.
Harvard subject headings:
United States--Armed Forces--Procurement.
United States--Armed Forces--Weapons systems.
Warranty--United States.
Princeton subject headings:
United States--Armed Forces--Procurement.
United States--Armed Forces--Weapons systems.
Warranty--United States.