(a) In General.—Not less frequently than annually, the Secretary of Defense shall submit to Congress a report that, for the year covered by the report—
(1)
identifies each instance in which the Secretary purchased drop-in fuel that was not cost-competitive with traditional fuel; and
(b) Definitions.—In this section:
(1)
The term “drop-in fuel” means a neat or blended liquid hydrocarbon fuel designed as a direct replacement for a traditional fuel with comparable performance characteristics and compatible with existing infrastructure and equipment.