The Johns Hopkins University Applied Physics Laboratory LLC, Laurel, Maryland, was awarded a $225,000,000 ceiling, indefinite-delivery/indefinite-quantity contract with cost-plus-fixed-fee term and completion task orders contemplated for engineering, development, and research capabilities. This contract provides for establishing and maintaining an essential capability for engineering or developmental work calling for the practical application of investigative findings and theories of a scientific or technical nature. Work will be performed primarily in Laurel, Maryland, with an expected ordering completion date of November 2026. No funds are being obligated at the time of award; the minimum guaranteed amount will be obligated with the first task order. This contract was a sole-source acquisition. The Defense Advanced Research Projects Agency, Arlington, Virginia, is the contracting activity (HR001122D0001).