§ 3131. Availability of appropriations

• (a) Funds appropriated to the Department of Defense for research and development remain available for obligation for a period of two consecutive years.
• (b) Funds appropriated to the Department of Defense for research and development may be used—
  • (1) for the purposes of section 4141 of this title ; and
  • (2) for purposes related to research and development for which expenditures are specifically authorized in other appropriations of the Department of Defense.