Johns Hopkins University, Applied Physics Laboratory, Laurel, Maryland, is awarded a $1,752,834,831 cost-plus-fixed-fee contract (HQ003425G0001). The purpose of the contract is to provide analysis, research and development, and system engineering support to assist the Office of the Under Secretary of Defense for Research and Engineering with conducting unclassified and classified research and analysis for essential engineering, research, development, test and evaluation, and analytic capabilities using operational knowledge of the national defense, intelligence, and security environments. The estimated completion date is Oct. 20, 2029. The work will be performed at Laurel, Maryland. No funds are being obligated at the time of the award. The total, if all options are exercised, is $1,752,834,831. Washington Headquarters Services, Arlington, Virginia, is the contracting activity.