Chenega Infinity LLC,* Chantilly, Virginia, has been awarded a $9,575,934 modification (P00013) to previously awarded contract HR001118C0151 for physical security support services. The modification brings the total cumulative face value of the contract to $47,314,065 from $37,738,131. Work will be performed in Arlington, Virginia, with an expected completion date of December 2023. Fiscal 2023 research and development funds in the amount of $3,390,500 are being obligated at time of award. The Defense Advanced Research Projects Agency, Arlington, Virginia, is the contracting activity.