Applied Physical Sciences Corp., Groton, Connecticut, has been awarded a $10,339,401 modification (P00010) to cost-plus-fixed-fee contract HR001120C00100 for Phase 3C of a research project for undersea sensing systems. The modification brings the total cumulative face value of the contract to $55,768,333 from $45,428,932. Work will be performed in Groton, Connecticut (52%); Arlington, Virginia (18%); Pawcatuck, Connecticut (15%); Orange, California (11%); San Diego, California (1%); Honolulu, Hawaii (1%); Geneva, New York (1%); and Washington, D.C. (1%), with an expected completion date of April 2024. Fiscal 2022 operations and maintenance funds in the amount of $10,339,401, are being obligated at time of modification award. This contract was a competitive acquisition in accordance with original broad agency announcement HR001117S0034. The Defense Advanced Research Projects Agency, Arlington, Virginia, is the contracting activity.