Northrop Grumman Systems Corp., Linthicum, Maryland, was awarded a $9,234,025 cost-plus-fixed-fee completion contract for a Defense Advanced Research Projects Agency research project for the Miniature Integrated Thermal Management Systems for 3D Heterogeneous Integration (Minitherms3D) program. The Minitherms3D program seeks to revolutionize thermal management 3D heterogeneous integration (3DHI) and significantly reduce thermal resistances within the 3D stack and external to the stack of 3DHI systems, while increasing volumetric heat removal. Work will be performed in Batavia, Illinois (42.5%); Linthicum, Maryland (22.2%); Lincoln, Nebraska (22.1%); Chicago, Illinois (7.3%); Niskayuna, New York (3.8%); and La Jolla, California (2.1%), with an expected completion date of May 2025. Fiscal 2023 research, development, test and evaluation funds in the amount of $4,034,707 are being obligated at time of award. This contract is a competitive acquisition in which 11 proposals were received in response to Broad Agency Announcement HR001123S0019. DARPA, Arlington, Virginia, is the contracting activity (HR001124C0303).