Mnemonics Inc.,* Melbourne, Florida, is awarded a $49,953,129 cost-plus-fixed-fee, indefinite-delivery/indefinite-quantity contract for the execution of specific radio frequency and infrared engineering, analytical, and technical efforts to support evolving timing technology. The contract does not include options. Work will be performed in the Washington, D.C. area, and is expected to be completed by Nov. 30, 2027. Fiscal 2023 research, development, test, and evaluation (Navy) funds in the amount of $100,000 will be obligated at time of award via the first task order and will not expire at the end of the current fiscal year. This contract was not competitively procured. The U.S. Naval Research Laboratory, Washington, D.C., is the contracting activity (N0017323D6000).