1. (a) Funds appropriated to the Department of Defense for research and development remain available for obligation for a period of two consecutive years.

2. (b) Funds appropriated to the Department of Defense for research and development may be used—

   1. (1) for the purposes of section 4141 ¹ of this title; and
   2. (2) for purposes related to research and development for which expenditures are specifically authorized in other appropriations of the Department of Defense.

¹ Reference reflects amendment made by section 1883(b)(2) of Pub. L. 116–283.