The University of Washington, Seattle, Washington, has been awarded a $10,472,367 modification (P00004) to cost-plus-fixed-fee contract HR001123C0150 for additional work on the RACER Phase 2 program. The modification brings the total cumulative face value of the contract to $23,125,678 from $12,653,311. Work will be performed in Seattle, Washington (90%); and Ellensburg, Washington (10%), with an estimated completion date of March 2026. Fiscal 2024 research and development funds in the amount of $5,500,000 are being obligated at the time of award. DARPA, Arlington, Virginia, is the contracting activity.