ColdQuanta Inc.,* Boulder, Colorado, was awarded a $10,900,000 cost-plus-fixed-fee contract to develop a rack-integrated, mountable, rubidium optical clock. Bids were solicited via the internet with one received. Work will be performed in Boulder, Colorado, with an estimated completion date of Sept. 26, 2024. Fiscal 2026 procurement, defense-wide funds in the amount of $10,900,000 were obligated at the time of the award. Army Contracting Command, Aberdeen Proving Ground, Maryland, is the contracting activity (W911QX-24-C-0024).